Gel PVC Slipper help stimulate blood circulation can relax and gently massage. Certification MSDS, CE, SGS, FDA, ISO13485 Gel PVC Slipperhelp stimulate blood circulation can relax and gently massage. Certification MSDS, CE, SGS, FDA, ISO13485...Also known as: cold hot pack, gel pad, gel pack, compress pack, microwavable hot cold pack, etc. MaterialPVC, PE+PA or Nylon+PVCSpec.23X24cm 100/pcsGel ...