Waterproof protection that travels with you 1000D PVC inner coating provides robust waterproofing, paired with a heavy duty waterproof zipper and widened 5.9 inch waterproof flaps. The waterproof droplet surface helps shield your luggage from rain, snow, and road spray, supporting long term durability. Universal compatibility for most vehicles Fits most cars and works with or without a roof rack, offering a flexible solution for additional storage on any vehicle. Secure, thoughtful design for peace of mind Four reinforced adjustable straps plus four heavy duty door hooks and two long straps keep luggage firmly in place. Prevents slipping or scratching your vehicle, even on highways or bumpy roads, ensuring your items stay protected and stable. Easy installation and convenient storage Smooth zips, adjustable straps, door hooks, and sturdy buckles simplify setup and adjustment. Foldable material allows compact storage when not in use, so it takes up minimal space in your trunk or garage. 23 practical use scenarios Family road trips or weekend getaways: extra luggage, blankets, and gear can be stored safely on the roof, protected from weather and road spray. Outdoor adventures and camping: transport tents, sleeping bags, and equipment without crowding the car interior, with secure fastenings for rough roads. Moving or transporting bulky items: move boxes or gear securely to avoid interior clutter and protect items from weather during transit.