... from headche, mucle aches disposable and instant ice pack SGS,MSDS,TUV,CE Instant Hot Pack 1.Easy to ... about 40 minutes 2.Non-toxic,non-caustic.disposable.Instant Hot Pack Function:1.Easy to use,can reach ... 43 C. long tiem hot-last about 40 minutes,2.Non-toxic,non-caustic.disposable.Use:1.Locate inner ... cold to -4 within 5 seconds, and keep cold for a long period 2. Flexible after cooling and contact ...