USMC United States Marine Corps Semper Fi T-Shirt. This Fitted Men's T-Shirt Is 100% Ring Spun Cotton Machine Washable Short Sleeve T-shirt Proudly Printed in the U.S.A. Slim V-neck collar stays true to a classic USMC motif. This USMC Men's T-Shirt features simple but bold graphics. Semper Fi! Recommended For those serving past and present in the United States Marine Corps and for those that support and love them.