{"niche":"有哪些可选的最轻 50L 背包？","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":"Kakwa 55 UltraGrid 是一款超轻多日背包，配有管状铝制框架、缝制臀带、多处外部口袋，以及用于耐久性的轻量 UltraGrid 面料。其内部容量接近 55 L，并具有异常低的整包重量，专为对背包重量和负载传递有高要求的长途徒步（thru-hiking）和快行露营（fastpacking）设计。","ideal_for":"适合的原因：在约 30.6 oz（M）和 55 L 容量下，它是少数保留有框架悬挂系统并使用耐用 UltraGrid 材料的最轻 50L 级背包之一。"},{"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":"Zerk 40 是一款 40 L 的快速背包，采用卷口（roll-top）封口，配有多个外部网眼口袋和跑步背心式（running vest-style）肩带，专为长距离高速徒步（fastpacking）设计。包体由耐用尼龙防撕裂面料（nylon ripstop）制成，包含一个水袋插槽（hydration sleeve）和可拆卸泡沫支撑片（removable foam framesheet）以提供结构性和舒适性。","ideal_for":"适合寻找最轻 50l 背包的用户，因为它以轻量无框的快速远足包设计提供 40 L 主容积，拥有众多外部口袋和可拆卸的内撑板。"},{"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":"适合追求最轻 50L 背包的人士，因为它将 50L 容量与仅 21.6 oz 的极低重量和超耐用的 Ultra 100X 材料结合在一起。"},{"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":"适合想要更轻负重的远足者：675 g 重量与 50 L 容量使其成为最轻的 50 L 背包之一，重量与容量比约为 ~0.0135 kg/L。"},{"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":"适合该需求，因为在约 32.0 oz (905 g) 的总重和 50 L 容量下，它是可用的最轻的有框 50 L 背包之一，同时保留了支撑性的 PVT 框架和腰带特性。"},{"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":"适合需要在保持支撑性铝合金框架和加衬臀带的同时尽可能减轻重量的用户；以31.2 oz (885 g) 重量和50 L 容量，它是保留支撑框架的50 L 带架背包中重量最轻的之一。"},{"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":"适合追求最轻50L级背包的买家：约30 oz重量、55L容量、Dyneema材质与卷顶压缩设计，使其在体积重量比方面位列最佳选择之一。"},{"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":"Exodus 55L 是一款无框超轻背包，采用 Ultra X 或 UltraGrid 面料制造，重量约为 18 oz，容量为 55L。它采用极简卷顶设计，具有大型外后袋以及侧面/前部网眼口袋，目标用户为使用睡垫作为撑背的有经验超轻徒步者。推荐承载重量约为 20-25 lb，佩戴舒适。","ideal_for":"适合寻找最轻 50L 背包的人群 -- 由于容量约为 55 L 且重量仅 18 oz，它在该容量级别中提供了最低的重量之一。"},{"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":"由于尺寸为 Regular 且重量为 25oz，主仓容积为 49L，它在提供完整功能的约50L 级别背包中属于最轻之一，同时仍具备40 lb 承重评级，故非常适合此类需求。"},{"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":"适合追求轻量与简洁的徒步者和穿越徒步者；由于使用 UHMWPE 面料与极简结构，在近 50L 级别的无框设计中（约 476-499 g，约 1.05-1.10 lb，内部容量约 31-37 L）属于最轻的背包之一。"},{"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":"适合追求最轻 50L 背包的用户：重量为 35.96 oz，使用可拆卸的 Delrin 圈形支架和极简的 Robic Nylon 结构以保持较低重量，同时保留 50L 的容量。"},{"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":"适合用于多日和越野行程，因为其重量为 31oz 到 36oz、容量为 50L，使其成为能舒适承载 40-60 lb 负重的最轻有框背包之一。"},{"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":"由于重量为 2 lbs 4 oz，且实验室测量的主仓容积为 45L，经过测试的承载能力可达 60 lbs，因此它是寻求能承载重载但仍属于最轻 50L 级别背包用户的首选之一。"},{"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":"该背包非常适合该用途：在 54 L 容量且基础重量为 20.2 oz（不含臀带）时，它在全尺寸 50L 级别背包中属于最轻之列，同时仍提供外部口袋和 Ultra 面料的耐用性。"},{"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":"适合重视轻量化的徒步者：以 21.8 oz 和 50 L 的规格，它是少数最轻的全框 50L 背包之一，提供碳弧框架和 Ultra 100X 面料以实现极低重量。"}]}