This is an Evaporative Cooling Product (ECP). Just submerge in cool water for several minutes, blot dry and wear! Fabric retains hydration keeping you cool for hours.

Comfortable, quilted nylon outer with polymer embedded fabric inner, and water-repellant nylon liner Low profile hook & loop closure. Ideal for use under uniforms. Provides 5-10 hours of cooling relief per soaking; lightweight, durable and washable.