Ice pack

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This article is about the sac of refrigerant gel. For sea ice, such as Arctic ice packs, see Pack ice

An ice pack

An ice pack with gel leaking out of a hole in the upper left corner

An ice pack (also called a ice/hot reusable gel pack) is a plastic sac of refrigerant gel or liquid. This liquid, usually non-toxic, can absorb a lot of heat, since its specific heat is very high.

Water (as ice) also has this property, but it expands too much when frozen.

It is commonly used to alleviate the pain of minor injuries.

[edit] See also

• Cooler
• Ice bag
• Heat pack
• Heating pad

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