The Peak Design Rain Fly (45L) is designed to be used with the Peak Design Outdoor Backpack (45L) to keep it dry and usable. The Peak Design Rain Fly is a bluesign-approved product that is made from waterproof Terra Shell 500D Nylon and is fully tapped at the seams.

The Peak Design Rain Fly (45L) features a cinchable cord as well as drainage holes. For easy storage, you will also find a zippered mesh pouch for storage.