Smartwool Men's Intraknit Thermal Max Merino Base Layer 1/4 Zip

This trim fit bulk-free 100% Merino wool thermal layer brings a new dimension to active winter wear with seamlessly integrated insulation and ventilation and perfectly articulated flex zones this is the cold weather base layer specifically designed to provide breathability and warmth in one cleanly styled piece.Why we like it:Body mapped venting paired with warm merino wool where you need the warmth this is a new way of contending with the needs of athletes in cold weather activities where you want your core to stay dry so you will stay warm.