Upgrade and Improvement: An additional ankle strap and a rotating D-ring are added to the ankle strap, making it freer, flexible and standardized. Achieve full activation of the hips and full extension of the legs.4D ring design: the ankle strap with D-ring has a unique design. It is equipped with four fixed D-rings to ensure even weight distribution, ankle stability and stronger strength during training.ADJUSTABLE: The length of the ankle sleeve drawstring can be adjusted to the desired movement, easy to adjust to the desired range of motion, snug and increases comfort.High-Quality material: the ankle strap is made of 6 mm thick diving material, which is comfortable and breathable. Steel reinforced double D-ring + 2 side rings, safe and firm, can be easily connected to the cable motor and resistance trainer that can protect your legs or arms well.FOR EVERYONE: The gym ankle strap is compatible with most standard fitness leg rings, resistance trainers and trainers and is very suitable for resistance training hips, hips, thighs, calf and hamstrings."