Helps you correct shrug, arched back, and bent spine. Corrects dance posture, improving body flexibility. Good for coordination and balance development and endurance training. It helps to train your muscles effectively. 8/9 loops design, provides ample space and strength to choose from, meet your needs. Perfect for men and women fitness training, such as yoga, squats, knee raises, Pilates, muscle stretching, gymnastics, etc. Good elasticity, long service life, for daily use in training.