The SI Core tee is designed with your service in mind. Experience the soft poly cotton bend complete with O Hydrolix best in class moisture wicking and quick drying technology. These shirts are AR 670-1 compliant for wear in uniform and will keep you comfortable while you’re on duty. O Hydrolix with moisture wicking and quick dryAR 670-1 compliant Oakley SI CORE 499 Tan T-Shirt (3 pack) FOA403402-3A8, Large