Rothco ECWCS Gen III Mid-Weight Underwear Bottoms (Level II)

I've bought and returned nearly $200 in thermal underwear due to poor fit or just not warm enough. Wish the quality was a bit better, as the 1st pair the waistband had torn away from the legging straight out of the package. Customer service sent a replacement with no hassles. These keep my legs warm when driving a forklift for 12hrs in a unheated warehouse where other brands like heatcore and rockface weren't enough and cost more

My husband works outside and over nights and it gets cold he told me these are a life saver and to order him two more pair.