2025 Women's Classic Thermal Merino 1/4 Zip Top

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 skiing, hiking, running, and more.

Fit: Slim
Our slim fit is intended to follow the contours of the body
Fabric helps combine the moisture management, temperature regulation, and odor resistance of 100% Merino wool with interlock knit for comfort
Back body seam wraps to front
Raglan sleeves
Flatlock seam construction designed to help increase comfort and minimize chafing
Size medium center-front zipper: 8" (20 cm)
Made in Vietnam: 100% Wool-Merino. Exclusive of Decoration.