The butt bands that are included are X-Light, Light, Medium, Heavy, & X-Heavy. Pick your resistance level! Our specially designed resistance bands for women are made from a proprietary fabric & latex blend that is far superior to latex resistance loops. The material retains elasticity and strength even with regular use and exposure to high temperatures & moisture. The fabric & latex blend of our hip bands for legs and butt also allow for sufficient airflow to reduce moisture, slipping, and discomfort. Our mini resistance bands will not pull your skin and cause discomfort similar to the latex squat band. We know you'll sweat while using our workout band for working out, that's why we've included the mesh bag to help the bands breathe during storage