Technical layering is highly effective when cold weather rolls around, and the Grundens Grundies Thermal Bottom Pant has been designed to help you conserve a vital resource - body heat. Offering a variety of material weights combined with HeiQ ™ anti-odour properties, the Grundies ™ collection offers a modular layering system that can be worn in numerous combinations depending on the conditions you're facing. Its "active fit" cut allows great freedom of movement, while its anti-pilling treatment and flat seams ensure long life, even when worn underneath other layers and subjected to lots of rubbing.