The Smartwool Thermal Merino Base Layer 1/4 Zip delivers premium warmth and adjustable comfort ideal for skiing hiking winter sports and reliable cold weather layering.

• Made from 100 percent responsibly sourced merino wool for ultra soft itch free next to skin feel
• Features 250 gsm midweight construction for consistent insulation without extra bulk
• Naturally wicks moisture regulates temperature and resists odors for all day freshness
• Has a quarter length zipper and high collar for quick ventilation and draft protection
• Includes flatlock seams to prevent chafing and fits smoothly under outer layers
• Fully machine washable following simple care instructions