Fever relieving cooling cold gel patch

Fever relieving cooling cold gel patchProduct DescriptionEvaporation can take away a lot of heat of vaporization. Generally one gram of water will take away 500 calories heat during evaporation. Cooling Gel patch’s main components are the polymer gel, the polymer gel has absorbed large amounts of water and had rich viscosity, when attached to the head, and it will cool down during the slow water evaStructure:It consists of backing layer, gel layer (contains medical gel,