The Polar Skin Complete Care Backpack is a portable and highly insulated option that allows for the carry of up to two Polar Skin Comprehensive Cooling Systems capable of treating one patient each in the field. The Cooler keeps ice from melting for 24 hours in 100+øF heat. The Polar Skin Comprehensive Cooling System is a highly-effective portable cooling system for the treatment of heat-related illnesses. Consisting of two (2) Polar Skin Ice Sheets (Triple Pack) and one (1) Polar Skin C2E Ice Pack Bundle, the Polar Skin Comprehensive Cooling System is scientifically proven to promote rapid core temperature reduction.