100% Polyester (polyester), built-in new environmentally friendly EPE polyethylene foam cotton, built-in 5 layers of 0.6CM thick cotton in the front, 4 layers of 0.6CM thick cotton in the back, intimate design in line with human body structure design, super buoyancy, safety higher. S/M size 1-6 years old, L/XL size 6-9 years old, 2XL size 10-12 years old
