... pressure 4.Foot care gel insole Functions Make shoes and feet more fitting; Shock absorption, anti-skid, easing pressure; ... Alleviate the friction between shoes and feet; Allow shoes more comfortable to make feet more easily. Transparent gasket:Polyethylene terephthalate. ... shoes.4.Reduce the friction between the feet and shoes,relieve feet pressure.5.High-quality,environmental,European standard, ...