... Certification MSDS, CE, SGS, FDA, ISO13485 Gel PVC Slipperhelp stimulate blood circulation can relax and ... ISO13485...Also known as: cold hot pack, gel pad, gel pack, compress pack, microwavable hot cold pack, etc. MaterialPVC, PE+PA or ... box, clamshell or other packaging)Function1.Massage Gel Insole helps stimulate blood circulation2.can relax and ... and hour before using gel slipper, cold gel pack,