EVA Kickboard Swimming Correction Training Large Small Head Pull Buoy, Random Color Delivery 1. It has good floatability, strong buoyancy, good toughness and wear resistance, strong and durable, not easy to deform, and good cushioning performance. 2. Made of environmentally friendly EVA material, it can be used in water for a long time, and feels soft. 3. The streamlined skirting board is fixed between the legs. When using it in swimming, you can focus on arm movements. It is suitable for assisting swimming and makes you good swimming posture. This is helpful for freestyle. 4. This product is designed for swimming beginners. It is lightweight, floating, impermeable, non-rupturing and discoloring. 5. This product is not a substitute for life-saving appliances. Children need to use it under adult supervision. Parameter: 1. Density: 35kg cbm. 2. Length: about 22cm, big end width: about 11cm, small end: about 8cm, height: about 11cm.