Smartwool - Plus Size Classic Thermal Merino Base Layer 1/4 Zip. Color Charcoal Heather. Low Stock. On sale for $66.00. MSRP $120.00.. 4.8 out of 5 stars3 left in stockBrand NameSmartwoolProduct NamePlus Size Classic Thermal Merino Base Layer 1/4 ZipColorCharcoal HeatherPrice$66.00MSRP: $120.00