About this item ★ Safety pillow, can be adjusted at will, multi-directional protection, comfortable and safe, exercise more healthy ★ Up and down 10 adjustments, athletes can adjust according to their height preferences ★ Strong spring booster, non-slip texture, non-slip and sweat-absorbent, effectively reduce the difficulty of exercise ★ Sports hook and foot foam, evenly and securely, protect the ankle, and exercise more securely. ★ Upgrade breathable sports leather, micro-hole circulation, breathable perspiration, comfortable fitness