Made of EVA to provide flotation and low water absorption. With its sturdiness, it ensures you continuous use. It is environmentally friendly and non-toxic. This is a great piece of swimming to help build upper body strength while swimming. The perfect swimming float for swimming, training any swimmer, both adults and teens, you can do great water sports. [Correct Your Swimming Posture]: The pull buoy helps to exercise upper body strength by floating your legs; you just need to keep the EVA pull buoy on your thigh, and the swimming pull buoy can provide foot buoyancy without kicking. You can focus on strengthening your back, shoulders, and arms. Then you can master your breath control and swim effectively. Product name: Eight character leg board Applicable people: children and adults size:30x13.5cm Material:EVA colour:Blue Package Contents: 1 x Pull the buoy Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.