1、These resistance bands are made from quality cotton‑polyester and rubber latex thread, which is durable and flexible. 2、The workout bands are small and convenient, with simplistic design, you can exercise anywhere you want. 3、These resistance bands are non slip and high resistant, without reduce its elasticity after repeated use and exercise. 4、Wide application, these loop bands exercise your hip, thighs, legs, abs, and shape your perfect curvy butt. 5、In‑built nonslip rubber latex thread, which can enhance the training stability and product durability. Item Type: Resistance Bands Material: Cotton‑Polyester and Rubber Latex Thread Set 2: Light Gray, Gray and Black Light Gray Size: Perimeter Approx. 200cm / 6.5ft; Width Approx. 4cm / 1.57in; Resistance Approx. 24lb Gray Size: Perimeter Approx. 200cm / 6.5ft; Width Approx. 4cm / 1.57in; Resistance Approx. 32lb Black Size: Perimeter Approx. 200cm / 6.5ft; Width Approx. 4cm / 1.57in; Resistance Approx. 49lb Application: Thin Back, Slimmer Legs and Sexier Butt 3 x Resistance Bands 1 x Storage Bag Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.