Whether you are an experienced Mudder, a first-timer or just along to show your support, you need to look the part - so make sure you attend any Tough Mudder event in an Official Tough Mudder print design!Tough Mudder has some of the best challenges around - from a 5K fun event, to the competitive 10 mile obstacle-filled challenges. Are you good enough to even take on the World\'s Toughest Mudder, a grueling 24-hour challenge? SHow your worth with our official range!T-Shirts are made from pre-shrunk 100% Cotton (Grey 90% Cotton / 10% Polyester). If you prefer a baggy fit, please order a size up.