Stay warm when temps hit a cold snap with these Rock Face Bi-Ply Performance Base Layer Pants. Double-layer construction traps air between layers for exceptional insulation. Great for lounging at home or as the foundational layer of comfort before you set off on outdoor adventure. Heavy-weight bi-ply construction (9 oz.) Double-layer design traps air for insulation Moisture-wicking Tagless label for comfort Open fly front Elastic waistband Ribbed ankle cuffs trap body heat