There is a gel on the corners, which can effectively protect dry or cracked heels from being rubbed and moisturized, repairing dry skin and cracked heels. Has good moisture absorption, breathability and elasticity. Easily adapts to different sizes of legs and is comfortable enough. Features - Color:White. - Material:Gel, cotton. - Size:17.00X10.00X1.50cm/6.68X3.93X0.59in. - Gel heel socks, comfortable and flexible to fit the foot. Provide the best care for your feet and avoid cracking problems. - The surface material is cotton material, which is durable, safe and wear-resistant. They don't make your feet sweat and get too hot. - Continuously hydrates your heels for a natural healthy look, nourishes smoothness and increases flexibility. - Prevent and treat cracked skin by wearing silicone socks on the go for ultimate protection. - Gel lining on the heel section speeds up the moisturizing process and helps dry or cracked skin heal faster.