Onesies on grownups are a debatable fashion choice but Microsoft seems to think it is okay only if you choose their Xbox Onesie. Built to be cozy with convenient pocket for your nonexisten Windows Phone and your various XBox controllers, the Xbox Onesie includes a lot of functional design touches like grippy elbow patches as well as design flourishes that mirror the look of the latest consoles. No pricing or availability information yet but we should expect to see these in Microsoft Stores soon.