{"product_id":"marchway-waterproof-rooftop-cargo-bag-21-cu-ft-black-weatherproof-with-lock-anti-slip-mat","title":"MARCHWAY Waterproof Rooftop Cargo Bag — 21 cu ft Black, Weatherproof with Lock \u0026 Anti-Slip Mat","description":"\u003cp\u003e\u003cstrong\u003eThe MARCHWAY Waterproof Car Roof Luggage Bag is a 21-cubic-foot, weather-resistant soft-shell rooftop carrier that expands vehicle cargo safely for road trips and everyday hauling.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis rooftop cargo bag combines roomy capacity with weatherproof materials and an anchored strap system so you can carry extra luggage, gear, or bulky items without installing permanent racks. Designed to fit bare roofs and vehicles with side rails or full racks, the bag folds down for compact storage and includes a transport case, lock, and anti-slip mat for added security and protection.\u003c\/p\u003e\n\n\u003ch3\u003eHow much gear can this rooftop bag hold?\u003c\/h3\u003e\n\u003cp\u003eThe MARCHWAY rooftop bag offers 21 cubic feet of storage — roughly the equivalent of seven medium suitcases — giving you significant extra space for family trips or moving items. Despite the large capacity, the soft-sided design flexes to fit oddly shaped loads while remaining aerodynamic to limit drag.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e21 cubic feet capacity (about seven medium suitcases)\u003c\/li\u003e\n  \u003cli\u003eSoft fabric expands around irregular items for efficient packing\u003c\/li\u003e\n  \u003cli\u003eFolds compactly into included carry case for storage\u003c\/li\u003e\n  \u003cli\u003e11.9 lb packed weight for easy handling and transport\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it stay secure on my car without a roof rack?\u003c\/h3\u003e\n\u003cp\u003eYes — the bag is engineered for universal fit and stability on most 4-door vehicles, including cars without factory racks. Patented 4+2 door hooks attach to the vehicle frame, and a comprehensive strap system keeps the bag anchored during highway driving.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e6 door hooks made from high-strength steel for a firm attachment\u003c\/li\u003e\n  \u003cli\u003e12 buckled connection straps plus 2 cross-top straps for compression\u003c\/li\u003e\n  \u003cli\u003eVelcro keepers prevent strap flapping and reduce noise\u003c\/li\u003e\n  \u003cli\u003eAnti-slip mat placed underneath helps minimize shifting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow weatherproof and durable is the carrier?\u003c\/h3\u003e\n\u003cp\u003eThe carrier uses 900D waterproof PVC tarpaulin with seamless welding to resist tears and repel water, snow, dust, and gravel. A double-flap zipper protects the closure from moisture while heavy-duty hardware and reinforced stitching extend service life under regular use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-density 900D waterproof PVC construction with seam welding\u003c\/li\u003e\n  \u003cli\u003eSBS zipper with protective double flaps for improved waterproofing\u003c\/li\u003e\n  \u003cli\u003e1.5-inch nylon straps and heavy-duty plastic buckles for durability\u003c\/li\u003e\n  \u003cli\u003eReflective logo increases visibility for safer night driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and use on trips?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: all straps are permanently attached, so you won’t misplace parts and setup takes only minutes. The bag’s strap layout and four-corner arc design are intended to reduce wind resistance and simplify tightening, while included accessories keep your load organized and secure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePermanently attached straps for faster, hassle-free setup\u003c\/li\u003e\n  \u003cli\u003eQuick-install door hooks compatible with most 4-door cars\u003c\/li\u003e\n  \u003cli\u003eTwo long cross-top straps for extra compression or fastening\u003c\/li\u003e\n  \u003cli\u003eCompact carry case included for storage between trips\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The MARCHWAY waterproof rooftop luggage bag is ideal for drivers who need temporary, high-capacity cargo space without permanent roof hardware — families, weekend adventurers, renters, and anyone transporting bulky or overflow items. It suits users who prioritize weather protection and easy installation, and who want a lightweight, foldable carrier that stores conveniently when not in use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this fit a car without roof rails?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The MARCHWAY bag uses 6 steel door hooks and adjustable straps to secure to most bare roofs on 4-door vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does it keep contents dry in rain?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The bag’s 900D waterproof PVC, seam welding, and double-flap zipper offer strong water resistance in typical rainy conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MARCHWAY","offers":[{"title":"Default Title","offer_id":48080676192414,"sku":"B0DZJ3TQT1","price":109.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/marchway-front-view-on-roof.jpg?v=1785784072","url":"https:\/\/northtrailauto.ca\/products\/marchway-waterproof-rooftop-cargo-bag-21-cu-ft-black-weatherproof-with-lock-anti-slip-mat","provider":"North Trail Auto","version":"1.0","type":"link"}