Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Men's Merino 250 Baselayer 1/4 Zip by Smartwool Save Liquid error (product-badge line 32): -Infinity% $105.00 | / Black / S - $105.00 Black / XXL - $105.00 Charcoal / S - $105.00 Charcoal / M - $105.00 Charcoal / XL - $105.00 Charcoal / XXL - $105.00 Color Black Charcoal Size S XXL M XL 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Sold out Spinner icon Notify me when back in stock Email address Email me when available Our best selling and warmest baselayer just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.