This summer, the temperature is shooting dangerously to triple digit in many parts of USA. By early June, many regions have already experienced the hike in high temperatures, though for the short period. It usually occurs when the high pressure in the upper atmosphere of the southern plains shifts towards northern areas, expanding heat across much of the nation.
A cold pack or an ice gel pack is a portable plastic bag filled with water, or refrigerant gel or liquid. When one wants to use it the contents in it are frozen and applied to the affected part.
