Made from 100 % latex with a small (1mm) inner diameter. Very smooth and buttery to load and and shoot. 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 double roller spearguns 90-110cm in length with a 7.5 mm spear shaft. Works extremely well for someone that normally has a difficult time loading a gun with reactive or thicker rubber diameters.  Price is per foot