Looking for a new, modern addition to your closet? Grab this Oakland Athletics Tamiami Button-Down shirt from Columbia. Its Omni-Shade technology will keep you safe from UVA and UVB rays, and its Omni-Wick technology will keep you dry and comfortable all day long. No fan should have to root for their squad without the best apparel, so be prepared to celebrate every Oakland Athletics victory the right way with this striking shirt.