{"niche":"哪些 50L 背包 最适合旅行？","description":"What are the best 50l backpacks for travel?","products":[{"brand":"Deuter","model":"Aircontact Lite 50+10 (adjustable to 50)","price_gbp":168.22,"origin_country":null,"specs":{"weight":"1640 g","capacity":"50 + 10 l","material":"140D PA RIPSTOP HT FD; 600D PES REC BS","hydration_system":"Compatible with 3.0 liter drinking system","number_of_pockets":"null","adjustable_torso_length":"VariQuick 42-62 cm"},"confidence_score":null,"sources":[{"label":"Enwild / TrailSense (merchant listing)","url":"https://trailsense.enwild.com/deuter-aircontact-lite/","currency":"USD","source_country":"US","price":225.0,"price_gbp":168.22,"scraped_at":"2026-06-12T13:26:05.186502"}],"summary":"Lightweight 50+10 L trekking pack with Deuter's Aircontact Lite back system, VariQuick adjustable torso (42-62 cm), ergonomic ECL hip fins and multiple external stretch pockets; made from durable ripstop and recycled polyester, it balances ventilation and load transfer for multiday trekking. Suits hikers who want a ventilated, adjustable 50L-class pack with a 10L lid extension for extra carry.","ideal_for":"适合 50L 旅行：其 50 + 10 l 容量、可调躯干（42-62 cm）和通风的 Aircontact Lite 背负提供舒适、可定制的贴合与多日旅行的有序携带。"},{"brand":"Gregory","model":"Paragon 48 (men) / Maven 45 (women) 50L equivalent","price_gbp":null,"origin_country":null,"specs":{"weight":"3 lbs. 8 oz.","capacity":"48 liters","material":"210 D ripstop nylon / 210 D HT ripstop nylon","hydration_system":"Reservoir compatible (internal hydration sleeve with SpeedClip)","number_of_pockets":"7","adjustable_torso_length":"Yes (approx 4 in range)"},"confidence_score":null,"sources":[{"label":"Mountains For Everybody (product review page with specs)","url":"https://mountainsforeverybody.com/gregory-paragon-48-pack-review/","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-12T13:25:49.068412"}],"summary":"Lightweight, feature-rich weekend backpack with a breathable suspension, floating lid, multiple pocketing and included raincover; available in S/M and M/L sizes. Suits fast-paced backpacking and overnight trips where low pack weight and good ventilation are priorities.","ideal_for":"适合 50l 旅行：其 48 升容量、轻量（约 3 lbs. 8 oz.）、可调躯干和兼容补水系统使其便于携带并适合多日旅行。"}]}