Layering under armour over under armour?
 

Has anyone ever tried layering under armour over under armour? Specifically, I already have several sets of the under armour boxer jocks, and was thinking about picking up a pair of the cold gear bottoms for my upcoming elk hunt in October. Would wearing two under armour layers against each other cause any problems (or be overkill)? I wasn’t sure if the bottoms would slip down since the boxers are made of the same material, and thus have a really slick surface.