When you decide to tackle about a dozen miles of grueling obstacles designed by British Special Forces, your old-school cotton T-shirt just won’t do. Under Armour® has the gear you need to compete in the toughest event on the planet. This Charged Cotton® T-shirt has the comfort of cotton, but wicks away moisture and dries quickly, keeping you cool and focused. Tough Mudder may be about teamwork and mental grit as much as it is about endurance, but that doesn’t mean you don’t need to be at your physical best. Get the T-shirt that keeps you powerful, focused, and shows everyone just how tough a Mudder you are.