... of high polymer and biological element2) Non-toxic with no side effects to the body3) Unlimited use4) Remains flexible even ... use: 1.This product can improve ocular microcirculation, eliminate eye fatigue, resume the plasticity of ciliary muscle, prevent vision ... warmers, instant heaters, cold insulating agents, Ice King, blue ice, eye masks, fillet, masks, belts, insole, wine-covers, freezing medium ...