I was very impressed by this. I got the coat as well. I have the L7 pants and the quality is great on both.
They are light, do not constrain movement. The fabric is elastic. There is a thin elastic insert in the groin area. The lining is made of pleasant fleece. Ventilation through the pockets works. In static in cold weather you feel that the pocket is open :). New, from the package they have a slightly pungent chemical smell, which then disappears.
Very comfortable pants. Great mix of outdoor functionality yet still could easily wear in a casual environment.
The most comfortable pants ever. Just perfect in every way