Hot/Cold Pack: 1.SGS,CE,ISO13485,FDA,MSDS ... or Hospital,clinic applications. The hot and cold pack can be made in TPU,PVC and fabric material ... can be made into neck cooler,shoulder therapy pack ,Knee pack ,waist pack,gel insole,breast therapy insole and more. Use ... manual:1.Store reusable cold pack into refrigerator .2.Apply the cold pack ...