Medical Ice Pack Easy to use during camping,travelling,emergency,etc, be activeted instantly by squeezing pag Medical Ice Pack 1. Easy to use during camping,travelling,emergency,etc, be activeted instantly by squeezing pag,can reach -4 within 2 seconds, long time cold-last,needs no refrigeration2. Can bear 20kgs during storage, transportationg without broken.Squeezing the inner pag as instruction ...