Our therapeutic massaging have a revolutionary design that allows your foot to float on of the liquid glycerin as you walk giving you a constant foot massage. Because liquid is self leveling, your entire body weight will be distributed evenly across the entire surface of your foot relieving on your back and knees. Feature - Color: Black. - Materials: Velvet, TPU and Glycerin. - Size XXL: 31.3 x 0.6cm. - Size XL: 29.5 x 10.3 x 0.6cm. - Size : 28.3 x 10 x 0.6cm. - Size L1: 27.3 x 10.3 x 0.6cm. - Size M2: 27.0 x 9.2 x 0.6cm. - Size : 25.5 x 9.2 x 0.6cm. - Size S: 24.3 x 8.8 x 0.6cm. - Size XS: 23.3 x 8.5 x 0.6cm. - Made of material for comfortable wearing. - Cleverly designed that will allow your foot to float on of the liquid Glycerin. Feel the instant and say goodbye to foot and knee pains . - The massaging are for back treatment and they will help you the effects of Fibromyalgia, Heel Spurs and Plantar . - Our liquid filled foot have a thin and flexible design. You won’t feel while wearing them, just a feeling of elevation and . - They will depress and give arch thus increase the circulation levels of your whole body. - Tips: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 1 pair x