Thermal Merino 1/4-Zip Layer, Black Forest

Yes, you know Smartwool socks, but do you know Smartwool's base layers? The Evie Lou crew is obsessed with them for layering in colder weather. We wear them for outdoor activities from running to biking to skiing, but they are also ideal under everything for our freeze babies, who abound here in Cleveland's winters! The top is crafted in a soft, itch-free merino wool, which naturally helps regulate body temperature, transports sweat away and cancels out odors. It has long sleeves and a flatlock seam construction that helps prevent chafing; a short mock collar and zip closure at the chest adds versatility. The fit is deliberately close; we recommend sizing up if you want a roomier fit.

• Our model, Julia, is 5'9". She's wearing a size XSmall here, which fit nicely. Julia's measurements: Bust, 34 inches; Waist, 25 inches; Hip, 36 inches.
• 100 percent wool.
• Machine wash, cold, gentle cycle; lay flat to dry.