The US-40 Rackpack offers variable waterproof storage from 28 to 40 liters, making it perfect for any adventure. With the full 40-liter capacity, it's ideal for packing a tent, sleeping bag, or roll mat, while the dedicated tunnel stores tent poles, making it an excellent moto-camping setup. For shorter rides, you can roll up both ends to reduce the capacity to 28 liters, ideal for carrying waterproofs or warmer clothing. The new long hook straps and hook-back system allow for easy mounting on a tail rack or other bike parts, and it can be mounted securely across a pillion seat if no rack is available. Reinforced strap mounts offer additional space for attaching other US-Drypacks, OS-Packs, or accessories. An adjustable shoulder strap is also included for easy carrying off the bike.