{"niche":"哪些品牌生产高质量的硬壳带轮背包？","description":"Which brands produce high-quality hard-sided wheeled backpacks?","products":[{"brand":"Matein","model":"Matein Wheeled Rolling Backpack (17-inch)","price_gbp":85.57,"origin_country":null,"specs":{"weight":"4.8 pounds","capacity":"36L","material":"Durable Water-resistant polyester fabric","dimensions":"19.6 x 13 x 9 in"},"confidence_score":null,"sources":[{"label":"Matein","url":"https://www.matein.com/products/matein-wheeled-rolling-backpacks","currency":"USD","source_country":"US","price":112.99,"price_gbp":85.57,"scraped_at":"2026-06-25T03:42:09.640015"},{"label":"Matein","url":"https://www.matein.com/products/matein-wheeled-rolling-backpacks","currency":"USD","source_country":"US","price":112.99,"price_gbp":85.57,"scraped_at":"2026-06-25T03:42:12.914222"}],"summary":"This wheeled backpack is sized for a 17-inch laptop and has a 36L capacity. It includes an extendable handle and has a water-resistant bottom plus wheel-equipped rolling design for easier movement. It's designed as a unisex travel/laptop backpack for daily commuting or trips where you want hands-free rolling.","ideal_for":"This Matein model uses a water-resistant polyester fabric and smooth-rolling corner-mounted wheels with an extendable handle, matching the key hard-sided wheeled backpack attributes (durable protective materials plus stable wheeled rolling) that high-quality brands build around."},{"brand":"Tumi","model":"Tumi International 2-Wheeled Duffel Backpack Carry-On","price_gbp":602.06,"origin_country":null,"specs":{"weight":"3.308kg","capacity":"40L","material":"Ballistic Nylon","dimensions":"55 cm x 35.5 cm x 23 cm","wheel_type":"2 wheels with skids","number_of_wheels":"2"},"confidence_score":null,"sources":[{"label":"Tumi HK","url":"https://www.tumi-hk.com/en/alpha-bravo/international-2-wheel-duffel-backpack-carry-on/tu-146629-1041.html","currency":"USD","source_country":"US","price":6700.0,"price_gbp":5073.98,"scraped_at":"2026-06-25T03:42:09.640015"},{"label":"Tumi Malaysia","url":"https://www.tumi.my/tumi/alpha-bravo/international-2-wheel-duffel-backpack-carry-on/tu-146629-1041.html","currency":"USD","source_country":"US","price":3990.0,"price_gbp":3021.67,"scraped_at":"2026-06-25T03:42:09.640015"},{"label":"Bergman Luggage","url":"https://www.bergmanluggage.com/products/tumi-alpha-bravo-international-2-wheeled-duffel-backpack-carry-on","currency":"USD","source_country":"US","price":795.0,"price_gbp":602.06,"scraped_at":"2026-06-25T03:42:09.640015"},{"label":"Tumi HK","url":"https://www.tumi-hk.com/en/alpha-bravo/international-2-wheel-duffel-backpack-carry-on/tu-146629-1041.html","currency":"USD","source_country":"US","price":6700.0,"price_gbp":5073.98,"scraped_at":"2026-06-25T03:42:12.914222"},{"label":"Tumi Malaysia","url":"https://www.tumi.my/tumi/alpha-bravo/international-2-wheel-duffel-backpack-carry-on/tu-146629-1041.html","currency":"USD","source_country":"US","price":3990.0,"price_gbp":3021.67,"scraped_at":"2026-06-25T03:42:12.914222"},{"label":"Bergman Luggage","url":"https://www.bergmanluggage.com/products/tumi-alpha-bravo-international-2-wheeled-duffel-backpack-carry-on","currency":"USD","source_country":"US","price":795.0,"price_gbp":602.06,"scraped_at":"2026-06-25T03:42:12.914222"}],"summary":"This carry-on converts to a backpack and has a duffel-style opening for flexible packing. It includes a low-profile TSA lock, a retractable back fabric panel that covers the wheels when worn as a backpack, and a sternum strap. It's suitable for travelers who want a softside carry-on with wheeled mobility and backpack versatility.","ideal_for":"Brands that build hard-sided wheeled backpacks will appeal to buyers looking for robust wheeled rolling carry-ons like this Tumi, which uses ballistic nylon and features 2 wheels with skids plus a retractable panel to manage wheel coverage when worn as a backpack."}]}