Men’s NikeCourt Dry Tennis Top features Dri-FIT technology to help keep you cool and comfortable. Its shoulder seams are moved forward and work with the underarm gussets to let your arms move without restriction. Nike Dry fabric with Dri-FIT technology helps keeps you dry and comfortable. Shoulder seams are moved forward for a comfortable fit. Underarm gussets help you move naturally. Hem vents allow natural motion.