Just wanted to give a shout out to Montbell Japan. I ordered 2 pairs of the new UL Thermawrap Pants (Nano Air Light competitor). I placed my order Tuesday Jan 3, and they just arrived on the East coast today, Jan 9. In addition, the total price with shipping and currency conversion fee for both pairs was $178. The pants are $135 each on the US site. Most of the prices aren't as good as that, but there are some deals to be had. Also they have certain models and sizes that aren't available in the US. I wanted a pair of the pants in XS, and you can't get them from the US site.
They are warm and comfy. I'm turned off by the supposedly baggy crotch of the Nano Air Light pants. The Montbell fits trim. No issues at all with mobility. I do wish they had used a 20 or 30d fabric at least for more durability. I added strips of tenacious tape to the instep