Lightweight and easy to use: Made of PVC fabric, this waterproof backpack is durable, lightweight and easy to clean. It is also very simple to use, just put your gear in it, then grab the top strap and roll it up a few times, then attach the buckle. Finally, take a few breaths into the easy-to-inflate air nozzle. Very easy and fast. Eye-catching in Open Water: We have two colors pink and orange. The bright color can make you very eye-catching and visible in the water. When you encounter some dangerous event, others can find you in time. Perfect for outdoor activities: If you like outdoor water sports, you can't miss this camping backpack. This dry bag is essential for outdoor activities where sensitive items would otherwise get wet, such as swimming, kayaking, camping, cruises, kayaking, rafting, boating, kayaking, fishing. Store personal items: This lightweight waterproof backpack can help keep your sleeping bags and spare clothing from getting wet if you're in sensitive water items. Protect your gear from water, snow, mud and sand. But we do not recommend placing electronics such as a mobile phone directly into it. A safe place to swim: This waterproof travel backpack has an adjustable and comfortable waist belt, if you feel tired, too deep in the water, or encounter unexpected situations such as cramping, you can use it as a floatation device to rest and help.