Bontrager Mesh short sleeve base layer are designed to be moisture-wicking, ultra quick-drying, stretch mobility & comfort. Designed to help keep you cool & dry when temperatures really rise. Made from lightweight fabrics fabrics enhanced with 37.5™ active-particle technology to keep your body at an ideal core temperature even on your hottest & longest rides. Product details Lightweight fabric & 37.5™ active-particle technology offer moisture & temperature regulation Ultralight moisture-wicking material made from polyester Natural materials eliminate odour molecules & never wash out Longer body length & drop-tail tucks into shorts or bibs to prevent overexposure Locker loop on collar makes the base layer easy to hang for quick drying after rides Fitted cut provides a streamlined body fit for enhanced performance