This moisturizing socks are made with flexible cotton blend, inside the heels are fully covered with slippery gel. <br><br> Moisturizing socks can constantly moisturize your heels, they are helping to make your heels softer & smoother.<br>  Can be used repeatedly, washable, the gel in the socks will not fall off easily.<br> The spa gel socks could work well when you are resting or sleeping, wear 2-3 times per week.<br><br> Both men and women, protect your cracked heels in daily life.