1Adopt special knitting, support lengthwise stretching, effectively solve the flanging problem and improve the training performance . 2The latex inner core melting makes the elastic ring toughness increase, not easy to break. 3Natural materials provide springback power and add anti-slip design, avoid shedding during exercise 4High flexibility, wonderful accessory for fitness, yoga, pilates, etc. 53 different colors for you to choose, meet your different needs.