Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip (SW002828)Classic Thermal Merino Made with 100% Merino wool for natural sweat management, odor resistance, and temperature regulation. We've updated the fit of our Women's Classic Thermal Merino Base Layer 1 4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and one of our best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam

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- Ratcheting drag star for precise drag settings

stick with size medium or M

letting you enjoy the outdoors worry-free

Shellback heel support

And when the sky is totally blacked out

We went further and totally redesigned our Stride micro crew running sock for the lightest and smoothest fit — topped it off with performance arch support to reduce fatigue

providing support when needed

the Daylite® Duffel 30 is the answer

Cold weather

Lew's line is tested and designed to stand up to every situation you present it with

We work to protect the places we love and conserving resources is part of that