Whether you're preparing for a kayaking trip, gear up for an awesome beach day, heading out for paddle boarding/ the sports field, or just to the pool, this sturdy, strong beach bag for women and men is just what you need. 40L Heavy Duty Beach Backpack The swim backpacks for swimmers measures 25.2" x 19", with a 40L capacity, and weighs 329g when empty. It is a large size for adults, teens, or youth. Durability You Can Count On We focus on quality, each snorkel bag is sturdy, but not bulky - soft, but not flimsy. Constructed of tough, tear-resistant mesh and waterproof-coated nylon with reinforced stitching on all sides to ensure resistance and durability, the swimming bag for swimmers is built to last. Crucially, big weave mesh panels at the sides and the bottom offer enough ventilation and drainage to help wet gear dry out faster, preventing musty odors. Soft Padded Straps Design With the straps' width of 2.8", this backpack beach bag provides maximum support to your shoulders, relieving your shoulders from being heavyweight and you don't have to worry about it digging into your sunburnt shoulder. Multiple pockets The main compartment is large enough for an adult-size kickboard and many other training aids. A large zipper pocket at the front (12"x7.3"x2") is designed to store your towels, after-practice clothes and separate them from other wet gears. An inner zipper pocket for your keys, phone, and other essentials. A netted pocket is deep enough to hold a water bottle or shower gel securely and avoid falling out. A back pouch to hold your handy items conveniently, like earplugs/ nose clips/ goggles.