ice pack,instant hot & cold pack Size: 200MM*100MM Materail: PVC, EN-71 Weight:270G hot & cold pack Cool Use 1.Store hot & cold pack in freezer for at least two hours. 2.Wipe the hoarfrost from the hot & cold pack before use. 3.Place the hot & cold pack mask against forearm to check for desired temperature. Hot Use 1.Place the hot & cold pack in the heated water for 10 minutes. 2.Remove the hot & cold pack from water with a tong,wipe try. 3.Place the hot & cold pack against forearm to check for desired temperature,if too hot let it cool. Packing: each in PP bag ,20pcs/inner box,40pcs/outer box size of carton :43*23*22cm gross weight :12kg We also have different designs of instant heat pack , hot pad, hand warmer .