Thanks for reaching out!
We are hoping to see some size mediums of the Co-op Cycles DRT 1.1 and the Co-op Cycles 1.2 bikes delivered sometime near the end of May or beginning of June. We also have additional shipments we are hoping to see at the end of June and into July. The Co-op Cycles DRT 1.0 is designed specifically to fit smaller riders so it only comes in the xxs size. We do not have the ability to pre-purchase inventory or set up an alert, so your best bet is to keep your eye on REI.com around those times to see when they are available to purchase.
Hopefully this helps, thanks!