Adopt pure natural latex material. Resistance band suggests that it is an band which can assist fitness enthusiasts to do resistance exercise. It can improve muscle strength， body flexibility and physical mobility. People can use it to lose weight and exercise the body flexibility. Suitable for arm or leg strength enhancing activities. This innovative band will make the body more fit. Material: natural latex Color: purple Size: circumference 610mm， width 20.6mm， thickness 4.5mm Tension range: 15-45LBS Suitable for track and field， yoga， and leg rehabilitation activities Package:1 x Resistance band