Smartwool Kids - Classic Thermal Merino Base Layer 1/4 Zip (Toddler/Little Kid/Big Kid). Color Cascade Green Heather. Low Stock. On sale for $51.73. MSRP $70.00.. 3.1 out of 5 stars1 left in stock+2Brand NameSmartwool KidsProduct NameClassic Thermal Merino Base Layer 1/4 Zip (Toddler/Little Kid/Big Kid)ColorCascade Green HeatherPrice$51.73MSRP: $70.00Rating3Rated 3 stars out of 5(7)