Shortness of Breath? Side of Beef? The Expedition One Genuine T-Shirt features a Expedition | Genuine S.O.B screenprint at front. Constructed of 100% cotton. Available in colorways as seen below. Men's sizes: SM (34-36), MD (38-40), LG (42-44), XL (46-48) unless otherwise noted. Skate Warehouse shows all colors that we have in stock. In rare cases the logo or the color pictured may be slightly different than what is shipped. Model wears a medium.