Mountain Warehouse Mens Tech Base Layer Bottoms. Conquer the chilliest adventures in unparalleled comfort with the Mountain Warehouse Men´s Tech Base Layer Bottoms, designed for the active gentleman who demands both performance and warmth. Crafted from a breathable, insulating, and moisture-wicking blend of 55% Recycled Polyamide, 40% Polyamide, and 5% Elastane, these seamless full-length bottoms boast a ribbed, elasticated, and stretch waistband for a secure fit. These are available in sizes XS, S, M, L, XL, XXL, and XXXL. Ref: UTMW6924