Smartwool Merino 250 Base Layer 1/4 Zip

The Smartwool Thermal Merino 1/4 Zip has been updated to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flat-lock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy cross country skiing, hiking, running, and more.

• Slim Fit
• 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance
• Fit updated to improve functionality while enhancing aesthetics
• Shoulder panels eliminate top shoulder seams
• Flatlock seam construction designed to minimize chafing
• 10′ (25 cm) center front zipper semi-locking slider
• Knit in Vietnam: 100% Merino Wool.
• Garment Weight: 298 g = 10.51 oz

Pair the Smartwool Thermal Merino 1/4 Zip with one our base layer pants for added warmth and comfort.

Layering is the key to cold weather comfort. Most people understand the idea of layering their clothing for outdoor activity: first, the wicking layer; second, the insulation layer and third the wind and weather layer. The key to making it work for you just takes a little practice. A comment we often hear is that, once out on the trail for 10-15 minutes, people are too hot! What a great problem: to be too hot when you’re outside in the winter! Well, fortunately, it’s never been easier to lighten up your layers.