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Introducing the Men's Classic Thermal Base Layer Sweater by Smartwool, designed for maximum comfort and performance. This long sleeve, solid black color shift top is composed of 100% responsibly sourced Merino wool, perfect for cold weather activities. It features a zip closure and collar neckline, enhanced with shoulder panels and flatlock seam construction to minimize chafing. Care - Machine wash. Ideal for high-intensity activities like skiing, hiking, and running.

Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
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First seen in Jun 2025

SMARTWOOL
Classic Thermal Base Layer Sweater In Black Color Shift

$138 $65 (53% OFF)
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Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
SHOP SIMON
$138 $65 (53% OFF)
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SHOP SIMON
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Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
SHOP SIMON
$138 $65 (53% OFF)
Sign up to view all available sizes
SHOP SIMON
We will watch available offers for you

Compare Across 800+ Stores

Size Guide
Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
SHOP SIMON
$138 $65 (53% OFF)
Sign up to view all available sizes
SHOP SIMON
We will watch available offers for you
Smartwool Classic Thermal Base Layer Sweater In Black Color Shift In Black
SHOP SIMON
$138 $65 (53% OFF)
Sign up to view all available sizes
SHOP SIMON
We will watch available offers for you
Product Details
SMARTWOOL THERMAL BASE 1/4 ZIP SWEATER IN BLACK COLOR SHIFT

SMARTWOOL THERMAL BASE 1/4 ZIP SWEATER IN BLACK COLOR SHIFT

Introducing the Thermal Base 1/4 Zip Sweater by Smartwool, crafted for optimal performance in cold conditions. Designed with long sleeves, this sweater features 100% responsibly sourced Merino wool to maintain your comfort and regulate temperature. The flatlock seam construction minimizes chafing, making it ideal for high-intensity activities like skiing and hiking. With a textured pattern and zip closure, it's easy to add or remove as needed. Care - Machine wash.

Product Detail Provided by SHOP SIMON - Purchase Now
SMARTWOOL CLASSIC THERMAL BASE LAYER SWEATER IN BLACK COLOR SHIFT

SMARTWOOL CLASSIC THERMAL BASE LAYER SWEATER IN BLACK COLOR SHIFT

Introducing the Men's Classic Thermal Base Layer Sweater by Smartwool, designed for maximum comfort and performance. This long sleeve, solid black color shift top is composed of 100% responsibly sourced Merino wool, perfect for cold weather activities. It features a zip closure and collar neckline, enhanced with shoulder panels and flatlock seam construction to minimize chafing. Care - Machine wash. Ideal for high-intensity activities like skiing, hiking, and running.

Product Detail Provided by SHOP SIMON - Purchase Now
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