Smartwool - Merino 150 Plant-Based Dye Base Layer Short Sleeve. Color Indigo Blue. Low Stock. On sale for $54.00. MSRP $75.00.. 4.7 out of 5 stars1 left in stockBrand NameSmartwoolProduct NameMerino 150 Plant-Based Dye Base Layer Short SleeveColorIndigo BluePrice$54.00MSRP: $75.00