1、Shockproof: The heel lift inserts are designed with a U shaped that helps stabilize and support the foot, naturally absorbs shock during high impact and activity, perfectly fitting your foot. 2、Pressure Dispersion: The lower part of the insoles are designed with holes to distribute the pressure on the bottom of the foot and has a non slip stabilizing effect. 3、Adjustable Height: Shoes insoles heel inserts are very easy to fix or remove and supports free height adjustment to meet your usage needs. 4、Fatigue Relief: Height increase insoles are suitable for high intensity sports, and help reduce fatigue caused by exercise, comfortable to wear, suitable for men and women. 5、Soft Material: The heel lift inserts are mainly made of high elastic PU material, high adsorption force, not easy to move, soft and reusable. Item Type: Silicone Heel Cushion Inserts Material: PU Product Weight: Approx: 200g/0.44lb Features: Invisible height 2 x Silicone Heel Cushion Inserts