Specification:MaterialTPEColorPurple, yellow, blueThicknessYellow: 0.35mmBlue: 0.45mmPurple: 0.55mmPulling powerYellow: 8-12lbBlue: 14-18lbPurple: 20-24lbFeatures:1. The tension belt is environmentally friendly and tasteless, durable, and the shape remains long without deformation2. Training environ..