Nupouch waterproof bags keep your belongings dry while being vibrant and colorful. Made out of tri-layer vinyl material, these traditional dry bags utilize a roll top seal to keep water out. Just fill the bag, roll the top over 3 times and connect the buckle. Whether on a boat, the beach or even at a water park, Nupouch waterproof bags will protect your stuff wherever you go. The 40L size offers lots of room for an extended trip. Carry towels and extra clothes for that snorkling trip. Use it to carry your supplies as you kayak down the river. Pack it inside of you suitcase and use it as an expandable extra bag for your travels. A sholder strap is included for easy carrying. The Nupouch 40L waterproof bag comes in green, yellow, gray, and dark blue colors.