1Small and light, can be put into a pocket, anytime and anywhere for efficient training. 2Provide effective training, use it to exercise your arms, back, legs and buttocks at the same time. 3Good elasticity, long service life, suitable for daily training, to achieve your fitness goals. 4Selection of environmental protection material, do not hurt hands, no smell, has soft touch feeling. 5Suitable for yoga, squat, knee increase, Pilates, muscle stretching, gymnastics, etc.