Description: Premium Material: The back float safety swim trainer is made of high quality EVA material, which is lightweight, can float, and is durable, which is very suitable for learning swimming.Training Aid: The swimming back floating is the perfect prop for swimming exercise, it can train your upper body in the water. It keeps the legs afloat and allows you to focus your arms for the stroke.Adjustable: The foam pull buoy float is designed in 4 separate parts, flexible and detachable. Beginners can choose how many floating boards to use to adjust the buoyancy according to their personal situation.Wide Application: The back float board has a wide range of uses, and it can be used by children, teenagers and adults. Suitable for swimming pool training and seaside playing, etc.Ideal Gift: The training swimming aid is a great gift for swimming beginners, pool exercise, swimming enthusiasts, and playing outdoors in summer. Specification: Material: EVASize: 21cmx16cmx8cm/8.27inchx6.30inchx3.15inch Package Includes: 1 Back Float Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful online shopping!