Size: 16.5 * 12.6 * 5.9 inch / 42*32*15 cm material: Nylon Waterproof backpack : Made of high quality waterproof and durable nylon. Waterproof nylon material makes it not easy to lose the color and keep a vivid look suit for all people who trendy or fashionable. Great gift for birthday and holidays for your family and friends. Adjustable Shoulder : Adjustable wide shoulder straps make this drawstring backpack more comfortable and durable. You can freely adjust the length of the shoulder strap to make it fit for you. Perfect space design: Main compartment for carrying your clothing shoes towel laptop school books daily supplies etc. One Hidden back pocket three inner pockets and one front pocket. Give you perfect classification for your small items like phone keys ID cards makeups wallets etc. Multiple uses : Our unisex drawstring backpacks are specially designed for swimming beach yoga fitness and other sports lovers. A Multi-Purpose Workout Sack for Swimming Surfing Hot Spring Travelling Hiking and Camping. 100% MONEY BACK SELLER GUARANTEE: Customer satisfaction is our top priority. Our Drawstring Bag come with a 3-month guarantee if you are not satisfied with our product or service please feel free to contact us. We will either refund your money or redeliver a new product.