Features:1. The double-shoulder swimming bag, one bag for dual purposes, reduces your burden and can be in close contact with nature at any time2. Dual airbag configuration, they have enough buoyancy and are safer to use. When one airbag unfortunately leaks, the other airbag can still maintain buoyancy to ensure safety3. Large storage space: Its volume is 28L and 35L, which can easily accommodate your clothes and other items. The fully waterproof design allows you to keep your items completely dry even after multiple dives in the water4. Lightweight and compact packaging size: The buoy is super light and can be folded into a very small packaging size. Therefore, it is very suitable for every bag.5. The backpack is suitable for beach, camping, rafting and other waterproof purposes. The shoulder strap is switched to a belt, and full of air is a standard swimming float. The double airbags are safer. If you are tired from swimming, you can use the buoyancy of the float to rest. At the same time, it reminds passing people and boats. Pay attention to avoidNotice:Actual color may be slightly different from the image due to different monitor and light effectPlease allow 1-3cm deviation due to manual measurementFabric: 0.35MM 210T nylon paste PVC+0.35MM PVC filmspecification:28L: 37*68CM), buoyancy: 12KG35L: 41*72CM), buoyancy: 15KGWaterproof rating: IPX6Product accessories: 2.5CM wide belt (shoulder strap) *2, the longest is 130CMNumber of air nozzles: 2 (lockable and fast inflating air nozzles)