The Polarmax Acclimate/Merino Wool pant is the perfect mid- or base-layer for all your winter adventures, and will outperform any other product you've ever owned in this category. Perfect under snowmobile bibs, snowboard pants, and even work pants. A midweight piece that provides impressive warmth without bulk, wicks moisture tirelessly to keep you dry, and is extremely durable. The proprietary blend consists of 50% Merino Wool/40% Acclimate-dry polyester/10% recycled polyester. Bottom line: bring it along, for whatever you're doing.