1. High-quality Cotton Polyester Fabric and Elastic Natural Latex Design---About Our Fabric Booty Bands: which are made of premium cotton fabric and natural latex blend, , breathable and soft to your skin. Extra thick materials, Non-slip, Non-rolling, Non-pinching for workout, more than 10 thousand times durability test to make sure the booty bands quality . 2. 3 Different Resistance Level---This set of glute bands with 3 colors are designed with 3 different resistance levels: Blue-Light (18~32lbs), Pink-Medium (30~50lbs), Purple - Heavy (45~70lbs). It is fit for all fitness level so that you could easily tailor your training depending on your strength, ability and comfort no matter you are a beginner, advanced user, athletes or etc 3. Non-Sliding & Non-Rolling---No worry about the "Roll up/Sliding" problem. Different from those latex/rubber resistance bands, these wide workout bands are seamed with high-quality cotton polyester stretch fabric and built in elastic nature latex inner, featuring , skin-friendly, durable, stable and anti-slip. 4. & ---These hip resistance bands are lightweight and space-efficient that you can easily put them in your suitcase or backpacks. It is very convenient for you to carry it to everywhere as it comes with a portable caring bag. You can have a efficient workout with this booty bands wherever you go by doing leg and butt exercises, stretching, yoga, etc.