[Durability stretch band that does not lose elasticity even if you continue to use it] Improve your flexibility and range of motion with the TRNR Stretch Band. The flat band is made from a tight weave of latex and nylon to ensure durability that does not lose its elasticity even after repeated use. Take stretching to the next level for ultimate safety and peace of mind. It can be used to prepare muscles as an effective warm-up tool before a workout and return them to their natural length after a strengthening session. Regardless of your fitness level or flexibility, the long size allows you to perform a variety of stretches targeting your back, shoulders, abs, hips, buttocks, quadriceps, hamstrings, and calves. The foldable and lightweight design allows you to carry it in your bag at any time to prevent and relieve stiffness and cramps.