Most of that stuff has been out of stock for a long time. When they re-did their website a few weeks ago, it started showing up fully stocked in all sizes.
As annoying as it is, it's better than what's happened in the past. At least half a dozen times, I've ordered Black Fleece items, only to have the shipping delayed multiple times over the course of months, until they finally cancelled the order. One order was cancelled nearly a year and a half after I placed it.