Hot/Cold Pack: 1.SGS,CE,ISO13485,FDA,MSDS 2.OEM service 3.high effective for cold compress therapy 4.reasonable service Hot Cold packs ... aid , Personal cre or Hospital,clinic applications. The hot and cold pack can be made in TPU,PVC and fabric material ... 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 ...