... 100% silicone (2) Certificates: LFGB, FDA, SGS (3) Good quality (4) Reasonable price Comfortable silicone height increase insole Details Material:100 ... with individual polybag-ODM packingDelivery1.By air /sea 2.Express(DHL,TNT,UPS,AAE,EMS service,Door ... China (Mainland)Testing machine1.Digital Height Gauge, caliper, Coordinate measuring machine, projection machine,2. roughness tester, hardness tester ...