{"niche":"What are the lightest 50l backpacks available?","description":"What are the lightest 50l backpacks available?","products":[{"brand":"Durston","model":"Kakwa 55 UltraGrid","price_gbp":148.48,"origin_country":null,"specs":{"weight":"30.6 oz (M)","capacity":"55 L","material":"UltraGrid","hydration_system":"Hydration port (reservoir not included)","number_of_pockets":"8","adjustable_torso_length":"Small: 15-18 in; Medium: 17-20 in; Large: 19-22 in"},"confidence_score":null,"sources":[{"label":"Durston Gear","url":"https://durstongear.com/products/kakwa-55","currency":"USD","source_country":"US","price":279.0,"price_gbp":208.16,"scraped_at":"2026-06-14T19:09:09.192524"},{"label":"CleverHiker (product page)","url":"https://www.cleverhiker.com/backpacking/durston-kakwa-55-ultralight-backpack-review/","currency":"USD","source_country":"US","price":199.0,"price_gbp":148.48,"scraped_at":"2026-06-14T19:09:09.192524"},{"label":"SectionHiker (product review/shop link)","url":"https://sectionhiker.com/durston-gear-kakwa-55-backpack-review/","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-14T19:09:09.192524"}],"summary":"The Kakwa 55 UltraGrid is an ultralight multi-day pack with a tubular aluminum frame, sewn-on hipbelt, multiple external pockets, and lightweight UltraGrid fabric for durability. It delivers near 55 L internal capacity with an exceptionally low pack weight, designed for thru-hiking and fastpacking where pack weight and load transfer matter.","ideal_for":"It suits the query because at ~30.6 oz (medium) and 55 L capacity it is one of the lightest 50l-class backpacks available while retaining a framed suspension and durable UltraGrid material."},{"brand":"Mystery Ranch","model":"Zerk 40 (50L equivalent)","price_gbp":164.11,"origin_country":null,"specs":{"capacity":"40"},"confidence_score":null,"sources":[{"label":"REI","url":"https://www.rei.com/product/C05627/mountainsmith-zerk-40-pack","currency":"USD","source_country":"US","price":219.95,"price_gbp":164.11,"scraped_at":"2026-06-14T19:09:09.192524"}],"summary":"The Zerk 40 is a 40 L fast-pack with roll-top closure, multiple external mesh pockets, and running vest-style shoulder straps designed for high-mileage, fastpacking use. It's built from durable nylon ripstop and includes a hydration sleeve and removable foam framesheet for structure and comfort.","ideal_for":"Ideal for the lightest 50l backpack search because it delivers a 40 L main volume in a lightweight frameless fast-pack design with numerous external pockets and a removable framesheet."},{"brand":"Zpacks","model":"Arc Haul Ultra 60 (50L)","price_gbp":297.7,"origin_country":null,"specs":{"weight":"21.6 oz / 613 g","capacity":"50L","material":"Ultra 100X (UHMWPE)","hydration_system":false,"number_of_pockets":"3","adjustable_torso_length":true},"confidence_score":null,"sources":[{"label":"Zpacks","url":"https://zpacks.com/products/arc-haul-ultra-50l-backpack","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Zpacks (Women's)","url":"https://zpacks.com/products/womens-arc-haul-ultra-50l-backpack","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Zpacks (Arc Haul Ultra collection)","url":"https://zpacks.com/collections/arc-haul-ultra-backpacks","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:13:56.547902"}],"summary":"The Arc Haul Ultra 50L is an ultralight framed backpack made from Ultra 100X fabric with a curved carbon fiber Arc Frame, roll-top main compartment, front mesh pocket, and side water bottle pockets. It weighs about 21.6 oz and features a ventilated suspended back, taped seams for water resistance, and modular add-ons for customization. It suits thru-hikers and fastpackers who prioritize low weight and ventilation for multi-day trips.","ideal_for":"Ideal for the lightest 50l backpack question because it combines a 50L capacity with a very low weight of 21.6 oz and an ultradurable Ultra 100X material."},{"brand":"Atom Packs","model":"Pulse EP50","price_gbp":205.18,"origin_country":null,"specs":{"weight":"675 g","capacity":"50 L","material":"EPX200 main fabric; EPX400 base; 210D Robic Extreema pockets and straps; Dyneema mesh front and bottom pockets","hydration_system":"No (external pocket compatible with bottles)","number_of_pockets":"8","adjustable_torso_length":"Yes (multiple torso sizes: e.g., Small 15-17 in)"},"confidence_score":null,"sources":[{"label":"Atom Packs (official)","url":"https://atompacks.co.uk/products/the-pulse-ep50-black","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"CleverHiker (affiliate review with retailer link)","url":"https://www.cleverhiker.com/backpacking/atom-packs-the-pulse-ep50-ultralight-backpack-review/","currency":"USD","source_country":"US","price":290.0,"price_gbp":216.37,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"Atom Packs (official)","url":"https://atompacks.co.uk/products/the-pulse-ep50-black","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:32.847181"},{"label":"CleverHiker (affiliate review with retailer link)","url":"https://www.cleverhiker.com/backpacking/atom-packs-the-pulse-ep50-ultralight-backpack-review/","currency":"USD","source_country":"US","price":290.0,"price_gbp":216.37,"scraped_at":"2026-06-14T19:15:32.847181"}],"summary":"The Pulse EP50 is an ultralight, customizable 50 L backpack built from lightweight EPX200 fabric with a durable EPX400 base, removable carbon hooped frame and padded hipbelt. It features multiple external pockets including Dyneema mesh, stretchy shoulder pockets, and configurable torso and hipbelt sizing, suited for thru-hikers and ultralight backpackers.","ideal_for":"Ideal for the question because at 675 g weight and 50 L capacity it is among the lightest 50 L backpacks, giving a weight-to-capacity ratio of ~0.0135 kg per liter."},{"brand":"Gossamer Gear","model":"Gorilla 50","price_gbp":153.88,"origin_country":null,"specs":{"weight":"31.9 oz / 905 g","capacity":"50 L","material":"70D and 100D Recycled Robic Nylon","hydration_system":"Hydration compatible","number_of_pockets":"7","adjustable_torso_length":"Small 16 in - 18 in; Medium 18 in - 20 in; Large 20 in - 22 in"},"confidence_score":null,"sources":[{"label":"Gossamer Gear","url":"https://www.gossamergear.com/products/gorilla-50-ultralight-backpack-large-yellow","currency":"USD","source_country":"US","price":206.25,"price_gbp":153.88,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"CleverHiker (listing)","url":"https://www.cleverhiker.com/backpacking/gossamer-gear-gorilla-50-backpack-review/","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"Garage Grown Gear","url":"https://garagegrowndesigns.com/collections/packs/products/gossamer-gear-gorilla-50","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"Gossamer Gear","url":"https://www.gossamergear.com/products/gorilla-50-ultralight-backpack-large-yellow","currency":"USD","source_country":"US","price":206.25,"price_gbp":153.88,"scraped_at":"2026-06-14T19:15:32.847181"},{"label":"CleverHiker (listing)","url":"https://www.cleverhiker.com/backpacking/gossamer-gear-gorilla-50-backpack-review/","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:32.847181"},{"label":"Garage Grown Gear","url":"https://garagegrowndesigns.com/collections/packs/products/gossamer-gear-gorilla-50","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:15:32.847181"}],"summary":"The Gorilla 50 is an ultralight framed 50 L backpack with a PVT aluminum frame, removable sit pad, and multiple hipbelt options aimed at thru-hikers and minimalist multi-day trips. It combines lightweight recycled Robic nylon construction with ample external pockets and a supportive pivoting hipbelt for comfort on trails.","ideal_for":"Ideal for the question because at ~32.0 oz (905 g) total weight and 50 L capacity it is one of the lightest framed 50 L packs available while retaining supportive PVT frame and hipbelt features."},{"brand":"Gossamer Gear","model":"Gorilla 50 Ultralight Backpack","price_gbp":153.88,"origin_country":null,"specs":{"weight":"31.2 oz / 885 g","capacity":"50 L","material":"70D and 100D recycled Robic Nylon","hydration_system":true,"number_of_pockets":"5","adjustable_torso_length":"Yes (S:16-18 in, M:18-20 in, L:20-22 in)"},"confidence_score":null,"sources":[{"label":"Gossamer Gear","url":"https://www.gossamergear.com/products/gorilla-50","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Gossamer Gear (Yellow sale)","url":"https://www.gossamergear.com/products/gorilla-50-ultralight-backpack-large-yellow","currency":"USD","source_country":"US","price":206.25,"price_gbp":153.88,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"OutdoorGearLab","url":"https://www.outdoorgearlab.com/reviews/camping-and-hiking/ultralight-backpack/gossamer-gear-gorilla-50","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:13:56.547902"}],"summary":"A feature-rich ultralight framed pack with a PVT aluminum frame and pivoting hipbelt, large external pockets, and a 10 L extension collar for flexible capacity. It balances low weight with comfort and load-carrying ability for multi-day thru-hikes.","ideal_for":"Suitable for the question because at 31.2 oz (885 g) and 50 L capacity it is one of the lightest framed 50 L backpacks while retaining a supportive aluminum frame and padded hipbelt."},{"brand":"Hyperlite Mountain Gear","model":"Unbound 55 / Southwest 55 (lab-measured ~50L main compartment options)","price_gbp":294.71,"origin_country":null,"specs":{"weight":"30.2 oz","capacity":"55L","material":"Dyneema Woven Composite","hydration_system":"Hydration compatible, port over right shoulder","number_of_pockets":"6","adjustable_torso_length":false},"confidence_score":null,"sources":[{"label":"Hyperlite Mountain Gear","url":"https://hyperlitemountaingear.com/products/southwest","currency":"USD","source_country":"US","price":395.0,"price_gbp":294.71,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Garage Grown Gear","url":"https://www.garagegrowngear.com/products/unbound-55l-by-hyperlite-mountain-gear","currency":"USD","source_country":"US","price":425.0,"price_gbp":317.1,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"SectionHiker (review/specs page)","url":"https://sectionhiker.com/hyperlite-mountain-gear-southwest-55-backpack-review-2/","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-14T19:13:56.547902"}],"summary":"Ultralight, waterproof backpacks built from Dyneema Woven Composite with roll-top closure, external pockets, and internal frame stays; both suit multi-day and thru-hiking where low weight and durability matter. The Unbound includes a removable padded hipbelt and multiple external pockets; the Southwest emphasizes abrasion-resistant solid pockets and a sewn-on hipbelt.","ideal_for":"Ideal for lightest 50l backpacks buyers because at ~30 oz weight, 55L capacity, Dyneema construction, and roll-top compression it offers one of the best weight-to-volume ratios available."},{"brand":"Mountain Laurel Designs","model":"Exodus 55L","price_gbp":182.8,"origin_country":null,"specs":{"weight":"18 oz","capacity":"55L","material":"Ultra X 100 or UltraGrid 200d RipStop","number_of_pockets":"3 mesh pockets","adjustable_torso_length":"M L XL options (torso sizes)"},"confidence_score":null,"sources":[{"label":"Mountain Laurel Designs (manufacturer)","url":"https://mountainlaureldesigns.com/product/exodus-57l/","currency":"USD","source_country":"US","price":245.0,"price_gbp":182.8,"scraped_at":"2026-06-14T19:09:09.192524"},{"label":"Mountain Laurel Designs (shop listing)","url":"https://mountainlaureldesigns.com/shop/packs/","currency":"USD","source_country":"US","price":325.0,"price_gbp":242.48,"scraped_at":"2026-06-14T19:09:09.192524"},{"label":"Mountain Laurel Designs (store)","url":"https://mountainlaureldesigns.com/product/exodus-55l/","currency":"USD","source_country":"US","price":245.0,"price_gbp":182.8,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"Mountain Laurel Designs (product listing via tag)","url":"https://mountainlaureldesigns.com/product-tag/thru-hike-pack/","currency":"USD","source_country":"US","price":325.0,"price_gbp":242.48,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"AdventureAlan","url":"https://www.adventurealan.com/product/mountain-laurel-designs-exodus-55l-pack/","currency":"USD","source_country":"US","price":325.0,"price_gbp":242.48,"scraped_at":"2026-06-14T19:11:35.147134"}],"summary":"A frameless ultralight pack built from highly durable, water-resistant Challenge Ultra fabrics with a minimalist roll-top design and large external rear pocket. It weighs about 18 oz and is intended for experienced ultralight hikers who pack carefully and carry modest loads.","ideal_for":"Suitable for the lightest 50l backpacks search because at ~55 L and 18 oz it offers one of the lowest weights for this capacity class."},{"brand":"Outdoor Vitals","model":"Shadowlight Carbon 60 (lab-measured 49L main + 15L external)","price_gbp":223.81,"origin_country":null,"specs":{"weight":"Regular 25oz","capacity":"Main 49L; External 15L","material":"100D Robic Nylon with 200D Spectra Ripstop","hydration_system":"Removable hydration sleeve","number_of_pockets":"8","adjustable_torso_length":"Short, Regular, Tall"},"confidence_score":null,"sources":[{"label":"Garage Grown Gear","url":"https://www.garagegrowngear.com/products/shadowlight-carbon-60-backpack-by-outdoor-vitals","currency":"USD","source_country":"US","price":299.97,"price_gbp":223.81,"scraped_at":"2026-06-14T19:13:56.547902"}],"summary":"A lightweight 60L total-capacity pack with a 49L main compartment and 15L external pockets, carbon-fiber stay suspension (CARBONFLEX), extensive external storage, and a removable hip belt. It's built from Robic nylon/Spectra ripstop with stretch mesh pockets and is rated to carry up to 40 lbs. Suited to thru-hikers and ultralight backpackers seeking lots of external organization at under 2 lb base weight.","ideal_for":"Ideal for the question because at 25oz (size Regular) and 49L main capacity it is one of the lightest full-featured ~50L packs while still offering a 40 lb carry rating."},{"brand":"Pa'lante Gear","model":"V2 (approx 50L)","price_gbp":179.07,"origin_country":null,"specs":{"weight":"476 to 499 g","capacity":"31 to 37 L","material":"210D UHMWPE Gridstop or 200D UltraWeave","hydration_system":"Flask compatible / bottle-accessible side pockets","number_of_pockets":"4 (bottom pocket, rear pocket, two strap pockets)","adjustable_torso_length":"16 in or 19 in"},"confidence_score":null,"sources":[{"label":"Pa'lante Packs (official)","url":"https://palantepacks.com/products/v2","currency":"USD","source_country":"US","price":240.0,"price_gbp":179.07,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Outdoorline EU","url":"https://www.outdoorline.eu/products/palante-packs-v2","currency":"USD","source_country":"US","price":292.0,"price_gbp":217.86,"scraped_at":"2026-06-14T19:13:56.547902"},{"label":"Treeline Review (retailer link/Garage Grown Gear listing referenced)","url":"https://www.treelinereview.com/gearreviews/palante-v2-backpack-vest-straps-review","currency":"USD","source_country":"US","price":300.0,"price_gbp":223.83,"scraped_at":"2026-06-14T19:13:56.547902"}],"summary":"A minimalist, frameless lightweight backpack available in two torso lengths and two fabric options (Gridstop or UltraWeave). It features a roll-top closure, external stretch mesh pockets including a bottom pocket and stashable hipbelt, aimed at fast-and-light and thru-hiking users. Weighs about 476-499 g with internal capacity 31-37 L.","ideal_for":"Suited for the question because at ~476-499 g (approximately 1.05-1.10 lb) and ~31-37 L it is among the lightest packs near 50L-class frameless designs due to its UHMWPE fabrics and minimal construction."},{"brand":"Six Moon Designs","model":"Swift V 50L","price_gbp":205.18,"origin_country":null,"specs":{"weight":"35.96 oz","capacity":"50L","material":"Robic Nylon","hydration_system":"Dual Hydration Ports, removable hydration bladder sleeve","number_of_pockets":"6","adjustable_torso_length":"16 in - 22 in"},"confidence_score":null,"sources":[{"label":"Six Moon Designs","url":"https://www.sixmoondesigns.com/products/swift-v-hiking-backpack","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"SectionHiker (shop link to Six Moon Designs)","url":"https://sectionhiker.com/six-moon-designs-swift-v-backpack-review/","currency":"USD","source_country":"US","price":275.0,"price_gbp":205.18,"scraped_at":"2026-06-14T19:11:35.147134"}],"summary":"The Swift V is a 50L ultralight, top-loading backpack with a removable Delrin hoop stay, roll-top extension collar, multiple harness and hip-belt configurations, and stretch mesh exterior pockets for on-the-go access. It's built from Robic nylon to keep cost and weight down while retaining features like large shoulder-strap pockets and a breathable contact panel, suiting long-distance and fastpacking use.","ideal_for":"Ideal for the lightest 50L packs because it weighs 35.96 oz and uses a removable Delrin hoop stay and minimalistic Robic Nylon construction to keep weight low while retaining 50L capacity."},{"brand":"Superior Wilderness Designs","model":"Wolverine 50","price_gbp":297.7,"origin_country":null,"specs":{"weight":"31oz to 36oz","capacity":"50L","material":"Ultra400X","hydration_system":false,"number_of_pockets":"3","adjustable_torso_length":"Up to 4in"},"confidence_score":null,"sources":[{"label":"Superior Wilderness Designs","url":"https://www.swdbackpacks.com/product-page/wolverine-95l-internal-frame","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"Backpacker (review listing, retailer price)","url":"https://www.backpacker.com/gear/backpacks/best-ultralight-backpacks/","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:11:35.147134"}],"summary":"The Wolverine 50 is a tall-frame, load-hauling internal-frame pack built from Ultra400X fabric with two removable 7075 aluminum stays, a supportive floating hip belt, and external pockets for bottles and gear. It's water-resistant, highly abrasion resistant, and designed to carry heavy loads comfortably for multi-day and off-trail trips.","ideal_for":"It suits the question because at 31oz to 36oz weight and a 50L capacity it is among the lightest framed packs that can comfortably carry 40-60 lb loads."},{"brand":"SWD","model":"Wolverine 50","price_gbp":297.7,"origin_country":null,"specs":{"weight":"2 lbs 4 oz","capacity":"50L","material":"Ultra 400x","hydration_system":false,"number_of_pockets":"3","adjustable_torso_length":"Up to 4 in"},"confidence_score":null,"sources":[{"label":"Backpacker (product listing / buy link)","url":"https://www.backpacker.com/gear/backpacks/best-ultralight-backpacks/","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"SWD (Superior Wilderness Designs)","url":"https://swdgear.com/products/wolverine-50","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:32.847181"}],"summary":"The SWD Wolverine 50 is an ultralight, high-capacity pack built for heavy loads, featuring a durable Ultra 400x fabric, floating hip belt, and water-resistant construction. It suits hikers who need a rugged, lightweight pack that carries large loads with minimal weight penalty.","ideal_for":"Because it weighs 2 lbs 4 oz and offers a lab-measured main compartment volume of 45L with a tested carry capacity up to 60 lbs, it's a top choice for those seeking one of the lightest 50l-class backpacks that still handle heavy loads."},{"brand":"ULA Equipment","model":"CDT 54L","price_gbp":246.21,"origin_country":null,"specs":{"weight":"20.2 oz without hipbelt","capacity":"54 L","material":"Challenge ULTRA™ X (Ultra 400X and Ultra 200X)","hydration_system":"Hydration reservoir compatible with two side ports","number_of_pockets":"Front stretch mesh pocket, 2 side pockets, 2 hipbelt pockets, internal removable pockets (exact count not specified)","adjustable_torso_length":"Multiple sizes available (15-18 in, 18-21 in, 21-24 in, 24 in+)"},"confidence_score":null,"sources":[{"label":"ULA Equipment (official)","url":"https://www.ula-equipment.com/product/ultra-cdt/","currency":"USD","source_country":"US","price":329.99,"price_gbp":246.21,"scraped_at":"2026-06-14T19:11:35.147134"},{"label":"Backcountry","url":"https://www.backcountry.com/ula-equipment-cdt","currency":"USD","source_country":"US","price":329.99,"price_gbp":246.21,"scraped_at":"2026-06-14T19:11:35.147134"}],"summary":"The ULA CDT 54L is a frameless ultralight backpack built from Ultra laminated fabrics for high strength and water resistance, offering about 54 liters of total volume with a roll-top closure, large stretch front pocket, adjustable side pockets, and removable foam back panel. It's designed for ultralight thru-hikers and travelers who want a high-capacity, low-weight pack with customizable options. The pack can be purchased without a hipbelt to save additional weight.","ideal_for":"Ideal for the question because at 54 L capacity and a base weight of 20.2 oz (without hipbelt) it ranks among the lightest full-size 50l-class backpacks while still providing external pockets and Ultra fabric durability."},{"brand":"Zpacks","model":"Arc Haul Ultra 50","price_gbp":297.7,"origin_country":null,"specs":{"weight":"21.8 oz","capacity":"50 L","material":"Ultra 100X UHMWPE","hydration_system":false,"number_of_pockets":"3","adjustable_torso_length":true},"confidence_score":null,"sources":[{"label":"Zpacks","url":"https://zpacks.com/products/womens-arc-haul-ultra-50l-backpack","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"Treeline Review (links to Zpacks)","url":"https://www.treelinereview.com/gearreviews/zpacks-arc-haul-ultra-50l-backpack-review","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"OutdoorGearLab (listing)","url":"https://www.outdoorgearlab.com/reviews/camping-and-hiking/ultralight-backpack/zpacks-arc-haul-ultra","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:29.675892"},{"label":"Zpacks","url":"https://zpacks.com/products/womens-arc-haul-ultra-50l-backpack","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:32.847181"},{"label":"Treeline Review (links to Zpacks)","url":"https://www.treelinereview.com/gearreviews/zpacks-arc-haul-ultra-50l-backpack-review","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:32.847181"},{"label":"OutdoorGearLab (listing)","url":"https://www.outdoorgearlab.com/reviews/camping-and-hiking/ultralight-backpack/zpacks-arc-haul-ultra","currency":"USD","source_country":"US","price":399.0,"price_gbp":297.7,"scraped_at":"2026-06-14T19:15:32.847181"}],"summary":"The Arc Haul Ultra 50 is an ultralight framed backpack with a curved carbon-fiber arc frame and suspended mesh back panel that maximizes ventilation and load transfer while keeping weight under 22 oz. It uses Ultra 100X fabric, offers modular accessory pockets, and is built for long-distance and ultralight hikers who prioritize low pack weight and ventilation.","ideal_for":"Ideal for the question because at 21.8 oz and 50 L it is among the lightest full-frame 50L packs available, offering a carbon arc frame and Ultra 100X fabric for minimal weight."}]}