Sturdy and Durable: Drybag is made of a ripstop tarpaulin that is resistant to wear, tear, puncture and remains flexible all year round. The seams are expertly welded and reinforced, strong and reliable. Heavy duty buckles, dense straps, secure stitching all enhance the bag’s overall strength. It won't wear easily even if it touches rocks and can be used for long time in harsh conditions, effectively keeping your gear dry, clean and safe. | Superior Waterproofing: The roll-top seal ensures reliable watertightness, convenient and practical. You simply open the bag to let in as much air as possible, then roll the top down 3 to 5 times and clip the ends together. This keeps air in bag, prevents water from seeping in and allows bag to float. As long as the bag is not completely submerged, whether in rapids or other wet situations, it flawlessly keeps the contents dry, protecting them from water, snow and sand. | Multiple Sizes and Colors: Sizes range from 5 to 40 liters to meet your different needs. 5L, 10L come with single adjustable and removable shoulder strap that can be carried across the body. 20L, 30L, 40L come with double straps that can be worn as a backpack. They can be folded into compact sizes for easy carrying and storage. Diverse color options make it easy to spot and differentiate with others. | Floatable and Trackable: The dry sack can float on water without sinking after being rolled up and buckled, so you can quickly track and retrieve your stuff. The D-ring and strap on the bag make it easy to attach to the boat, keeping your stuff always with you without getting lost, allowing you to enjoy thrilling outdoor activities with peace of mind. | Versatility: Its outstanding waterproof performance, durability and practical design make it a reliable companion on any water adventures, such as paddling, sailing, canoeing, surfing, river tubing, snowboarding, climbing, hunting, water park and beach trips. It can also be used as a simple bag for daily hiking or traveling during the rainy season.