soft clean health care massage silicone arch support 1.passed CE, SGS, FDA, LFGB, ROHS soft clean health care massage silicone silicon insole Specifications1.100% high quality liquid silica gel which is safety and eco-friendly, especially suitable for athletes, the old 2.people and long walk man3.temperature range is -40°C-200°C4.space saving, flexible, non-stick, no rust durable and long ...