WATERPROOF DRY BAG - The swim buoy has a waterproof storage box separate from the inflatable air chamber. This allows you to keep valuables such as cell phones, ID cards, wallets, keys, etc. with you. ADJUSTABLE BELT - The adjustable buckle belt fitsdifferent waist sizes, easily adjust your desired waist size, making it the perfect swimming accessory for anyone. It fits perfectly with any swimsuit or wetsuit. Great for swimming, snorkeling, triathlon and more. PVC Material - The swimming buoyis made of high-quality environmentally friendly PVC material, which is durable, not easy to cut, waterproof, tear-resistant, and friction-resistant. There is a strap on the swim buoy for your convenience. Swim Buoyancy Aid - Once inflated, it comfortablysupports an adult's weight. Plenty of air volume buoyancy provides protection for swimming, and you can grab the float if you're cramping or just need a break. Packing list: 1 waterproof dry bagProducts from Chunchuan's store