Material: Silicone Rubber(reusable) Color: Transparent Size:4 size(Different thickness) Feature:Massage to relieve the grinding feet Package content: a pair(2 pcs) Features: Made of silicone gel, more soft and comfortable Effectively prevent heel uncomfortable, skin peeling or blister from heel and shoe rubbing Washable , don't effect the stickiness Suitable for all closed heel shoes 100% brand new and high quality