Soft fabric: Soft to the touch to enhance comfort and coverage of injured area. No Leakage: Special sewing technique create superior leak resistant. Ice/Hot use: Suitable for both cold and hot therapy (Accept temperature:-20~70°C) Adjust temperature easily: Add more ice or hot water to suit individual prefered temperatures Reusable & portable Certificate ISO9001/ISO13485/CE/TUV: meet medical health & environmental protection quality standard, safe to use