Control your climate Bontrager's Mesh Women's Sleeveless Baselayer keeps you cool and dry when temperatures rise. It's made of ultra-lightweight fabrics enhanced with 37.5 active particle technology to keep your body at an ideal core temperature on even your hottest and longest rides. Product details - Profila Dry fabric and 37.5 active particle technology offer moisture and temperature regulation - Ultra-light, moisture-wicking material made from polyester and Profila Cool - Natural materials eliminate odor molecules and never wash out - Longer body length and drop tail tucks into shorts or bibs to prevent overexposure - Locker loop on collar makes baselayer easy to hang for quicker drying after rides - Fitted cut provides a streamlined body fit for enhanced performance