Backpack MaterialMade of waterproof polyester and durable zipper. light and durable. not easy to scratch or tear. only weighs 0.56 lbs. Large CapacityBackpack size is 32*21*35cm / 12.6*8.2*13.78 inches. Recommended age for use is 4-12 years old. Dry and Wet SeparationThe backpack is divided into a dry and wet compartment and a shoe compartment. Place wet items in wet areas: swimsuits. towels. hats. etc. Dry area for dry items: clothes. snacks. etc. The bottom of the backpack can hold shoes or toiletries. Adjustable Shoulder StrapsWide shoulder straps are more comfortable and relieve shoulder pressure. The shoulder straps can be easily adjusted to the right length. Multifunctional UseUnisex. suitable for various activities such as swimming. sports. beach. mountain climbing. camping. picnic. travel. school. etc.