Made from 100% latex with a small (1 mm) inner diameter. That means more rubber working for the given diameter, resulting in more power and slightly less recoil. Very snappy, yet still elastic and smooth to load. Capable of being stretched to 400% without collapsing. Longer lasting and better energy retention than other rubbers on the market. Provides an impressive amount of power for their given size, allowing for greater shaft speed and momentum. Ideally suited for single roller spearguns 80-120cm in length paired with a 7mm spear shaft. Price is per foot