You know a lot about boats or maybe you just know a lot about a lot of things. Either way, you want people to know that you own a boat and you may or may not know things. Wear this shirt and see what you really know! There is a test at the end of the season so at least try to find out some things while you are out there. The front of the shirt has our company logo and the back has the graphic and text. Get the tank top and show off some stuff.. Canvas Unisex Tank. Super stylish, lightweight tank top. Great summer weather choice from a trusted brand. 4.2 oz., 100% combed and ringspun cotton, 30 singles. Premium-feel men's/unisex tank-top. Soft material, lightweight, with side seams, retail fit.