New Balance Men's Tempo Sleeveless Tee 100% Polyester Imported New Balance Men's Sleeveless Lightning Dry Tempo Tee 2.0 is lightweight and offers UV protection and moisture-wicking capabilities UPF Ultraviolet protection factor of 40 for effective protection from UV rays 100 percent polyester Lightning dry fabric wicks moisture away from your body Reflectivity offers increased safety and visibility in low light conditions Machine wash with cold water, line dry, or lay flat to dry