Made of 500-Denier PVC, our BackSak Backpack is 100% waterproof. Padding helps ensure comfort; zip pockets protect your gear; reflective trim keeps you visible at night. Whether you're hiking the trails or rafting the rapids, you want to keep your gear safe & dry. Solution: our waterproof BackSak. This rugged backpack comes in vinyl-coated woven polyester with watertight welded seams. Result? It Guards Your Gear Against: Rain, including heavy downpours Waves & splashes - perfect for kayaking, surfing & sailing Snow & sleet - ideal for skiing, snowboarding & more Sand, dirt, mud & dust - great for camping The main compartment of this super-snug sack even stays watertight when it dips briefly below the surface. (Not recommended or rated for prolonged submersion.) Plus, BackSak Offers: Padded back & cushioned adjustable straps for comfort Roomy inner zip pocket, perfect for keeping dry stuff safely separate from wet stuff Splash-proof zippered outer pocket for keys, IDs, etc. 2 secure closure options: top clip & adjustable side clips D-rings at sides to hold your water bottle & other must-haves Reflective for Nighttime Safety Your BackSak dry bag even helps you stay visible in the dark, thanks to its reflective patch & trim (around the pocket). Added bonus: If it falls overboard, it's easier to spot & retrieve. Guaranteed, So Order Risk FREE If you're unhappy with your BackSak, return it for a money-back refund. Add to cart now for yourself & all the adventurers you know!