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 20L size has plenty of space for all your gear. This bag can keep a towel, a change of clothes, lunch, and your valuables dry. Use it as a day pack and don't worry if it starts to rain! 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 20L waterproof bag comes in green, yellow, gray, and dark blue colors.