Material: made of rubber

The BOMBASTIC women's swim cap by AQUASPEED is the perfect choice for women with long hair who value the spaciousness of the cap and the comfort of the fit. Available in many different colors, the BOMBASTIC swim cap is also a great option for style-conscious swimmers. The thick rubber material of the cap and the air-filled bubbles on its surface make this cap warmer than standard caps, meaning it can be used in open water and outdoor pools.