DescriptionOur insoles adopt professional adjustable design. Because the insoles are made of flexible silicone material, adjustable layers allow you to build up the height by adding layers yourself; Strong self-adhesive that firmly stays in place for lasting comfort; if they lose stickiness, just tear off and wash them, air dry then they can be used again.Features-Material: TPR Flannel, Silicone -Size: 12.00X6.00X5.00cm/4.72X2.36X1.97 in. - Safe material, colorless and tasteless. Easily increase height, comfortable feet. - Various height options, Please choose the height according to your needs. - Easy and comfortable to increase, no cumbersome feeling. - Comfortable silicone, comfortable to walk without tired feet. - Height increase insole can be used for leg length discrepancies, heel spurs.