Mens NikeCourt Dry Challenger Tennis Top features Dri-FIT technology to help keep you cool and comfortable. Its shoulder seams are moved forward and work with the underam gussets to let your arms move without restriction. Nike Dri-FIT technology helps keeps you dry and comfortable. Shoulder seams are moved forward for a comfortable fit. Underarm gussets help you move naturally. Knit fabric is engineered to create lightweight breathability in high-heat zones. Slim, modern fit reduces bulk to limit distraction.