Double airbag protectionThe swimming arm buoy has two airbags. This design provides double protection for swimming students. Construction with main and additional air chambers provides two layers of buoyancy to keep you above water. Thickening DesignMade of eco-friendly thickened PVC. Harmless to health and durable. Soft, skin-friendly polyester fabric provides extra comfort and prevents chafing or sticking to the skin. Beginners at sea or playing in the pool are well protected. Safety first Double airbag design, safer and more comfortable, with perfect buoyancy, can prevent children from playing in the sea or the swimming pool. Bright colors make you more visible and increase your safety while swimming. Portable and lightweight Double safety valves make it easy to inflate and deflate the swimming aid, making you win time. Comfort valve for quick inflation. You can easily inflate and deflate. After deflating, it can be folded into the corresponding luggage without taking up too much space in your storage. Ideal swimming tool Ideal swimming aid for beginners, toddlers and babies, also available for adults. Children can move freely without restrictions. These wristbands are sized for ages 4 and up and the maximum weight the swim arm can support is approximately 80kg. Note: Due to the effects lighting and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is tolerance in the size of the product.