ice pack vest 1. Reusable ,Non-toxic,Non-caustic. 2. FDA, SGS, MSDS,CE, etc approved 3. OEM welcomed ice pack vest 1.CE,SGS,EN71,FDA2.Non-toxic,non-caustic,reusable3.Eco-friendly Features1) cooless lasts for about 4 hours2) won’t cause static electricity and no additional expenses3) non-caustic,non-toxic,eco-friendly and reusable 4) put the inner ice pack in the refrigerator for about 12 hours