Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip Black Swim With a soft

With a soft

If you’re not keen on wearing a hydration vest

ALL ORIGINAL - A classic frame shape with timeless appeal that will always be in style

Bio-based content is made from renewable resources to help reduce our carbon footprint

polarized lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays

Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip Black Swim With a softSW016370001 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 construction to help prevent chafing as well as keep you comfortable and temperature regulated as you enjoy high intensity