The Mueller® Kold Instant Cold Pack is a convenient, single-use cold therapy solution designed for immediate treatment of sprains, strains, bruises, and minor injuries. This Instant Activation pack requires no freezer or ice; simply squeeze the internal pouch to initiate an endothermic reaction that drops the temperature in seconds. Its compact and flexible design allows it to conform to the contours of the body, such as knees, ankles, or shoulders, effectively reducing swelling and numbing pain on the spot. It is an indispensable item for sports bags, emergency kits, and travel.