Gitman Bros. Vintage makes some of our favorite shirts. Based on archival designs, they're inherently cool and always in style. Which is why the shirts don't go on sale all that often. But the brand just launched their Winter Sale, where a variety of shirts on their site are marked down 25%. But sizes and styles won't last long at these prices, so if you see something you like (and there's plenty here), you'd better pull the trigger.