SmartWool Men's Classic All-Season Merino Base Layer Long Sleeve

Spring skiing or summer camping? The year-round Men's Classic All-Season Merino Base Layer Long Sleeve is game for either. With our Core Spun technology, we've wrapped lightweight Merino around a nylon core for added durability, while still keeping the comfort of ultra-soft, responsibly-sourced Merino next to skin. We added smooth flatlock seams to help minimize chafing and offset shoulder and side seams to lie smoothly beneath pack straps. No matter the season or the activity, this base layer is made for it.

• 88% Merino Wool/12% Nylon
• Imported
• ABOUT THIS PRODUCT: From spring skiing to summer camping, our Men's Classic All-Season Merino Base Layer Long Sleeve is built for year-round performance. Core Spun tech wraps durable nylon in soft Merino wool for next-to-skin comfort. Flatlock seams reduce chafing, and offset shoulders sit smoothly under pack straps—ideal for layering in any season or adventure.
• FEATURES: Designed to contour the body, this slim-fit base layer features a lightweight Merino jersey fabric with a recycled nylon core and 100% Merino wool next to skin. Flatlock seams and offset shoulder and side seams—wrapped to the front—help reduce chafing and enhance comfort during active movement.
• CARE INSTRUCTIONS: Machine wash warm on a gentle cycle with like colors to preserve color consistency and ensure long-lasting wear.
• GO FAR, FEEL GOOD – SMARTWOOL EST. 1994: Born on the slopes of Colorado, Smartwool is driven by the belief that time outside is time well spent. We harness the natural performance of Merino wool to keep you comfortable, so you can go farther, feel better, and experience more—every step of the way.