Interlock-knit construction using 100% Merino wool provides reliable warmth, moisture regulation, and natural odor resistance for cold days on snow or trail. The Smartwool Men’s Classic Thermal 250g Merino Baselayer Crew Top sits close to the body with a slim fit that layers smoothly under insulation and shells without excess bulk.

Refined seam placement improves next-to-skin comfort during long wear. Flatlock seams and offset shoulder and side seams reduce friction, while redesigned shoulder panels remove top shoulder seams to eliminate pressure under packs. Side seams wrapping toward the front enhance mobility and comfort through active movement. Built by Smartwool, the Classic Thermal 250g Merino Baselayer Crew Top is a dependable foundation for cold-weather layering systems.

Key Features

• Fabric & Construction: 100% Merino wool with interlock knit
• Fit: Slim fit designed to follow body contours
• Seams: Flatlock seam construction with offset shoulder and side seams

Additional Features

• Shoulder panels eliminate top shoulder seams to reduce chafing
• Side seams wrap to the front for improved comfort and mobility

Information provided by manufacturer