... trouble,...... materia Gel PVC Slipperhelp stimulate blood circulation can relax and gently massage. Certification MSDS, CE, SGS, FDA, ISO13485 ... ...PVC Slippers help stimulate blood circulation can relax and gently massage. Certification MSDS, CE, SGS, FDA, ISO13485PVC ... . non-toxic, non-caustic, reusableUse manual:for hot use, soak it into hot water approx. 80-90 degree Celsius for ...