Icy-pack instant ice is recommended for cryotherapy. Excellent in case of traumas to soothe the pain and to prevent haematomas, swellings, etc. Easy and quick to use anywhere and anytime. Press the bag to break the inner bubble and shake to mix contents. The blend you obtain drops temperature of the pack down. Activates at -6 c reaches 0 c in 30 minutes (at environment temperature of 20 c). Box of 25 pcs.