Smartwool - Merino 250 Base Layer Crew. Color Charcoal Heather. On sale for $86.25. MSRP $115.00.. 4.7 out of 5 stars+8Brand NameSmartwoolProduct NameMerino 250 Base Layer CrewColorCharcoal HeatherPrice$86.25MSRP: $115.00Rating5Rated 5 stars out of 5(506)