Instant Cold Pack quickly releases cold within 5 seconds when it's activated. ME1701 Instant Cold Pack requires no special handling or refrigeration as it can be activated by just squeezing it. ME1701 Rapid Cold Ice Pack can help reduce body temperature and relieve pain and swelling. Instant Cold Pack is convenient to use for sports injuries, and is non-toxic and non-caustic. ME1701 Instant Ice Pack is available in 100g, 240g, and 260g.