Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip 2026 Charcoal Heather Size:M When the season runs the

When the season runs the full spectrum—from icy midwinter mornings to soft spring slush—you need a glove that can keep up with every turn

With a raised back to keep the snow out

a powerful responsive construction

ideal for those seeking both performance and retro vibes

offering a 4-way stretch for enhanced flexibility

Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip 2026 Charcoal Heather Size:M When the season runs theConstructed from 100% responsibly sourced Merino wool, the Smartwool Mens Classic Thermal Merino Base Layer 1 4 Zip provides heavyweight warmth while naturally regulating temperature and managing moisture. Its interlock knit delivers soft, durable performance for cold weather skiing, hiking, or running. The slim fit tracks the body for efficient layering, and strategically placed flatlock seams with offset shoulders reduce chafing during movement. A