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.
Base Layer
Smartwool Base Layers
Responsibly sourced, naturally performing Merino wool—helping you stay dry from sweat, resistant to odors, and comfortable at the right body temperature 365 days a year.
Features
- Our slim fit is intended to follow the contours of the body
- Our lightweight Merino jersey fabric uses a recycled nylon core while still keeping 100% Merino wool next to skin
- Flatlock seam construction and offset shoulder and side seams designed to help increase comfort and minimize chafing
- Side seams wrap to front
- Made in Vietnam: 88% Merino Wool, 12% Recycled Nylon. Exclusive of Decoration.
- SW016952
Care
- Machine Wash Warm Gentle Cycle
- Wash With Like Colors
- Do Not Bleach
- Tumble Dry Low
- Cool Iron As Needed
- Do Not Iron Decoration
- Do Not Dry Clean
Classic All-Season
Our year-round base layer made with a Merino blend to maximize durability. Perfect for four-season layering and everyday comfort. Wear it alone on warm days, or as a layering foundation on cooler days.











































































































































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