No gym wardrobe is complete without Arnold's notorious shirt from Pumping Iron! These T-shirts are built with a synthetic blend of performance fibers, NOTHING like your average T-Shirt. It fits tight and will cling to your muscle in all the right places. With that being said, please take the fit into account when ordering, if you are between sizes or not sure, ORDER UP. If you have the classic shape this will be the best shirt in your gym bag hands down.