Answer Racing Evaporator Long Sleeve Shirt - 2X-Large/Black Answers Evaporator base layer line is constructed with high quality, durable, moisture wicking fabrics that manage body temperature while keeping you dry and comfortable throughout your motos and trail rides Spun fabric construction with wicking and anti-bacterial treatments creates a reactive moisture transfer system that keeps the body cooler and dryer than cotton. After 60 minutes of exercise the Evaporator fabric releases 80% of its moisture after 30 minutes of rest. Cotton releases only 40% of its moisture after the same amount of time. Inner layer contains fibers that will wick the moisture off skin quicker, creating a cooler interior climate.