PT, PT every day, build your body the Marine Corps way in our Pain Is Weakness Black Grunt Exclusive. Features: Made of 100% cotton. Full back and front left chest screen printed designs. Back design displays shimmering outlined text "PAIN IS WEAKNESS LEAVING THE BODY, USMC" and an enlisted Marine Eagle, Globe, and Anchor. Front left chest design displays a shimmering enlisted Marine Eagle, Globe, and Anchor.