We have engineered I.C.E. into the interior of our materials to cause an endothermic reaction once there is any contact with moisture (sweat). When the reaction occurs, energy in the form of heat is removed from the body surface in contact with the I.C.E., causing a +10 degree Fahrenheit drop over a 3 minute period. We all sweat to cool the body down, we just take that cooling up a notch.
*Please Note: Our Woven shirts are Performance Athletic Fit, so sizes may fit smaller than our other Performance shirts.