It's very comfortable and warm.  I'm 6'4" and 106 lbs.  I'm size S but I ordered size M due to the problems mentioned in the other reviews about the waist.  It's probably 2 size bigger than me.  I had to roll up the trousers so I don't clean the floor when I'm walking.  Now I'm hoping it shrink a little after wash and dry.
The gray is a little darker than it shows on the picture.
They are good house pants after all.  Though I wouldn't wear these for work out.  The fleece is not good with sweat.