1、[Independent Double gasbags]: Equipped with 2 independent gasbags. Even if one of them is broken, the other can provide sufficient buoyancy, making it safer to use. It is a necessary equipment for swimming in open water. 2、[Easy to inflate and deflate]: The swimming buoy adopts an inflatable design. During use, you can blow in air directly from your mouth. When deflating, you only need to open the air nozzle to squeeze the air. 3、[Highly Visible in Open Water]: Our swimming buoys are brightly colored and have high visibility. They are especially eye-catching in lakes, oceans and other open waters. It can help you avoid boats, surfers, kayaks, and motorboats. And it can also prevent dangerous marine animals from not coming. 4、[Double Shoulder Strap Design]: The inflatable buoy is made of high-quality PVC, odorless, durable and long lasting. The double shoulder strap design can be used as a storage backpack. Full of air is a standard swimming float. The double gasbags are safer. You can use the buoyancy of the float to rest when you are tired. 5、[Multi-function]: The backpack is suitable for beach, camping, rafting and other waterproof purposes. It can also be folded into a compact size for easy carrying. Suitable for rafting, swimming, surfing at sea, diving, fishing, water park and other outdoor water activities. Material: environmentally friendly nylon PVC Thickness: 0.35MM Product accessories: 2.5CM wide belt (shoulder strap) *2, the maximum length is 130CM Color: orange Size (approximately): 28L (tile size: 37*68CM), buoyancy: 12KG 35L (tile size: 41*72CM), buoyancy: 15KG Weight: 28L is about 600 grams, 35L is about 740 grams Number of air nozzles: 2 (lockable and fast inflating air nozzles) Waterproof rating: IPX6 1 * Swimming Buoy