Rain Fly for Outdoor Backpacks When your Peak Design backpack needs total protection from the elements, look no further than the ultra-packable waterproof Outdoor Rain Fly. Constructed from waterproof Terra Shell 50D recycled ripstop nylon with a 2,000mm hydrostatic coating and fully-taped seams, the Outdoor Rain Fly keeps your pack dry in the gnarliest of downpours. A cinchable elastic cord around the perimeter of the rain cover ensures it fits tightly around your bag, and laser-cut holes at the bottom allow any moisture that seeps in to quickly drain. When not in use, the Outdoor Rain Fly stuffs into a zippable mesh pouch that can hang on outside of your bag to dry out. Fabrics are Bluesign-approved and PFAS-free. Fair Trade Certified and 100% carbon neutral. Features: Protects your bag from severe/prolonged rain, snow, and elements Waterproof Terra Shell 50D recycled ripstop nylon with a 2,000mm hydrostatic coating Fully taped seams Cinchable elastic perimiter cord ensures cover fits snugly Laser-cut drainage holes at bottom release moisture that seeps in Stuffs into zippable, breathable mesh pouch when not in use Cord loop for hanging outside your bag to dry Bluesign-approved and PFAS-free Fair Trade Certified and 100% carbon neutral Fits: 15-20L Size Fits: Outdoor Backpack 18L Everyday Backpack 20L Everyday Backpack Zip 15L/20L 25-30L Size Fits: Outdoor Backpack 25L Everyday Backpack 30L (not recommended for the 20L) Travel Backpack 30L 45L Size Fits: Outdoor Backpack 45L Travel Backpack 45L Dimensions: Packed: 5.5 x 4.72"Deployed: 11 x 19.29 x 7" Weight: 0.14 lbs Materials: Waterproof Terra Shell 50D recycled 2x6 twin rip nylon with a 2,000mm hydrostatic coating Stretch mesh stuff pocket Durable #5 zipper Elastic shock cord with thermoplastic cinch hardware Bluesign-approved and PFAS-free Manufacturer SKU: BARF-20-BK-1 In The Box: Peak Design Rain Fly 15L-20L - BlackMesh PouchLimited Lifetime Manufacturer Warranty