One of the best adidas Ultra Boost colorways is back, but this one's probably not going to last for long.

The limited edition "Mystery Grey" Ultra Boosts, which first popped up at select retailers last week and promptly sold out, have just hit adidas.com in a full size run. Here, they're officially titled "Solid Grey," but rest assured that it's the same colorway.

If previous limited drops like the "Silver" and "Cream" Ultra Boosts are any indication, this could be the last chance you'll have at copping these. Couple that with the fact that the "Mystery Grey" make up is as clean as they come, and these could be the next in line to sell out.

Don't make the mistake of waiting until Kanye's spotted in a pair to try to scramble and track these down. Cop 'em right now from adidas for $180