蓄ちく冷れい剤ざい

noun

cold pack; ice pack; thermal gel

A reusable pack containing a gel or liquid that stays cold after freezing; used in coolers, lunch boxes, or for injuries. The term 保冷剤 is much more common in everyday Japanese.

See also: 保冷剤

• 蓄ちく冷れい剤ざいを冷れい凍とう庫こで凍こおらせてからクーラーボックスに入いれた。

  I froze the cold pack and then put it in the cooler box.