According to the Center for Disease Control and Prevention, between 1979 and 1997, there were 7,000 deaths related to excessive heat in the US[1]. Heatstroke is a serious concern for athletes, specifically football players, as they exercise in the heat, have a greater risk of dehydration, and wear helmets that block the ventilation of the head. Among U.S. high school athletes, heat illness is the third leading cause of death and disability. Since 2005, 39 football players have died from heatstroke, with 29 of those being high school athletes[2]. Mortality rate and organ damage from heatstroke are directly related to length of time between core temperature elevation and initiation of cooling therapy. Therefore, heat illness and heatstroke are preventable with an accurate monitoring device that can indicate when a player is in danger.