Designed for hot weather comfort, the Gore Bike Wear 3. 0 Singlet wicks away sweat and provides excellent thermo regulation on summer rides. The form fitting construction of polyester and elastane pulls moisture from the skin so it can quickly evaporate into the air. Gore's fabric is held together with flatlock seams to reduce chafing, and mesh vent panels along the underarms and scapula area add extra breathability for scorching days. If you need it, the full length semi lock front zipper is an easy way to dump heat fast. Throw your gels in the three rear back pockets and get moving.