Smartwool Men's Classic Thermal Merino Base Layer Crew Large Black

Premium Merino Wool for Natural Performance
Crafted with 100% Merino wool, this top offers excellent temperature regulation, odor resistance, and sweat management. The 276 g (9.74 oz) midweight design balances warmth with wearability, making it a reliable layer for cold-weather use. Whether you're layering for outdoor winter activities or daily commutes, this piece stands out as a top-rated merino wool base layer for men.

Enhanced Fit and Seam-Free Shoulders
Designed with a slim fit, this layer features shoulder panels that remove top shoulder seams, helping reduce pressure from backpack straps and minimizing skin irritation. The flatlock seam construction prevents chafing during movement, supporting all-day comfort across high-output sports. The improved fit adds functionality without sacrificing aesthetics.

Built for Cold Weather Versatility
Engineered with an interlock knit, the fabric enhances breathability, thermoregulation, and moisture control. Its natural properties make it a go-to choice among Smartwool base layer fans and those seeking the best merino wool base layer for winter. Ideal for activities like skiing, hiking, and climbing, it adapts to varied environments with ease.