The Aqua-Speed TECH 2 swim fins have been specifically designed to be moulded in silicone, as opposed to rubber. The benefits of using this material far outweigh the extra cost; the silicone does not cause blisters as rubber is prone to, and the translucent colours are an attractive marketing advantage. In addition to this, silicone is denser than water which helps keep the feet below the surface - essential when kicking correctly. The actual blend and hardness of the silicone used has been the result of extensive collaboration with the moulder, the material is soft, yet resistant to tearing and splitting, and is UV proof as well.
Blue colour may vary in this product from each fin.