Waterproof rain cover for backpacks. Compatible with 45L size backpacks. It can fully cover and protect the entire backpack in sudden rain or bad weather. Made of high-density nylon material, it is waterproof, tear-resistant, and durable. It repels water and is convenient for outdoor activities, commuting to work or school, and travel. Because it is elastic, it fits easily on the backpack, and when not in use, it can be folded compactly for easy carrying. Size guide: 45L Reference size: Approximately 50 x 35 x 25cm Color: Orange Material: High-density nylon Brand new, unused item. Please refrain from purchasing if you are concerned about minor details due to home storage. Instant purchase is OK. Thank you.