A billion people may use Microsoft products, but until now, just about nobody has worn them. All that changes–maybe–starting December 15th, when the company’s retro-themed Softwear by Microsoft T-shirts hit the market. Including some designs by rapper Common, the line celebrates the much-missed era when floppy disks were actually floppy and 640KB did indeed feel like all the memory anybody would ever need. Here’s a little fashion show of the initial shirts, which come in four sizes: Basic, Home, Business, and Ultimate. (Kidding!)