Smartwool updated the fit of the Women's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of the heaviest base layer tops and one of the 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.

• Classic 100% thermal merino
  
• Slim Fit intended to follow the contours of the body
  
• Moisture management
  
• Temperature regulation
  
• Odor resistance 
  
• Merino wool with interlock knit for comfort
  
• Back body seam wraps to front
  
• Raglan sleeves
  
• Flatlock seam construction to minimize chafing
  
• Size medium center-front zipper: 8" (20 cm)
  
• Made in Vietnam
  
• 100% Wool-Merino, exclusive of decoration