[Special Use]: Effective auxiliary swimming training device, suitable for swimmers with limited finger control and strength, necessary for beginners. Environmentally friendly material: Made of EVA material, tasteless, environmentally friendly and lightweight. [focus on details]: high quality buckle, comfortable to wear. Ergonomic design: The one-piece shape matches ergonomics and is more suitable for swimming training. [Application scenario]: swimming pool, beach, hot spring. Product Description: Product Name: Buoyancy Aid. Size: 17x17x10cm. Inner diameter: 7cm. Weight: 0.11kg. Material: EVA. Blue color. Scope of delivery: 2 x swim cuffs. Features: 1. Light, tasteless and waterproof. 2. It matches the ergonomic design. 3. High quality materials. 4. Two different uses. 5. Exquisite buckle. Warning: 1. Due to different monitor settings and lighting conditions, the actual color may vary slightly from the illustration. Slight deviations are possible due to manual measurement. 2. Bath handcuffs should be kept away from direct sunlight and should be kept in a cool place when not in use. 3. Children should swim under adult supervision to avoid unnecessary accidents.