Simply put, this is a waterproof backpack. custom waterproof cooler bags are made of waterproof material, waterproof and versatile. So wherever you go and whatever activity you attend, it protects your electronics and other valuables from moisture.

A waterproof surf backpack that doesn't leak when you stand on it with your whole body, it seals well. It also has side pockets for umbrellas and water bottles, and adjustable straps are perfect for choosing the right length for your height. Great for travel, weekend getaways, shopping and outdoor activities, travel, hiking, camping, hunting, hiking and more. It is a good gift for primary and middle school students, suitable for children, boys, girls, teenagers and adults.