Our therapeutic massaging insoles have a revolutionary design that allows your foot to float on of the liquid Glycerin as you walk giving you a constant foot massage using specific acupressure points. 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( W x H); 152g(Weight). - Size XL: 29.5 x 10.3 x 0.6cm( W x H) ; 128g(Weight). - Size : 28.3 x 10 x 0.6cm( W x H) ; 120g(Weight). - Size L1: 27.3 x 10.3 x 0.6cm( W x H) ; 117g(Weight). - Size M2: 27.0 x 9.2 x 0.6cm( W x H) ; 101g(Weight). - Size : 25.5 x 9.2 x 0.6cm( W x H) ; 92g(Weight). - Size XS: 24.3 x 8.8 x 0.6cm( W x H) ; 80g(Weight). - Size S: 23.3 x 8.5 x 0.6cm( W x H) ; 71g(Weight). - at Amazing Insoles, have cleverly designed gel inserts to have a revolutionary design that will allow your foot to float on of the liquid Glycerin. Feel the instant pain relief and say goodbye to foot and knee pains . - The massaging insoles are for back pain treatment and they will help you the effects of Fibromyalgia, Heel Spurs and Plantar Fasciitis. - Our liquid filled foot insoles have a thin and flexible design. You won’t feel while wearing them, just a feeling of elevation and relief. - They will absorb and give arch support thus increasing the blood circulation levels of your whole body. Package list: 1 x pair of TPU Liquid Massaging Orthotic Insoles Shoe Inserts Glycerin Filled Insert Absorbs Therapeutic Foot Massage for Plantar Fasciitis Flat Feet (Black) - Size XXL