For xs you really gotta buy em when they first release or else you're out of luck. I'm also an xs, settled for a s instead they still look good, xs would just fit better. I'm 5'3" btw.
Yeah they do, its very limited though. They currently have the TF pants in xs for:
heather grey
http://store.nike.com/us/en_us/pd/tech-fleece-pants/pid-1535842/pgid-10084639
light blue
http://store.nike.com/us/en_us/pd/tech-fleece-pants/pid-10203964/pgid-10084639
not sure if they restocked...
I finally got my af1's from nike yesterday. I usually buy running shoes and i feel like the size I ordered is a little big. How much space do you guys have on the front? and your heel isn't supposed to slip when you walk right?