The Smartwool Women’s Classic Thermal Merino Base Layer 1/4 Zip is a warm, high-performance top designed for cold-weather adventures. Made from 100% responsibly sourced Merino wool, it offers superior moisture management, temperature regulation, and odor resistance. The updated slim fit, raglan sleeves, and flatlock seam construction provide a close, comfortable fit while minimizing chafing, making it perfect for skiing, hiking, running, or any high-intensity activity.

Fit: Slim (follows body contours)

Fabric: 100% Merino Wool

Features:

• 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)

Women's Smartwool Apparel Size Chart