Classic Thermal Merino Base Layer Bottom – Women's

Built for cold-weather hiking, snow sports, and layering, this is our go-to thermal base layer bottom for women who need reliable warmth without bulk. 100% Merino wool interlock fabric regulates body temperature and handles moisture naturally, so you stay comfortable through hard efforts and rest stops alike. Flatlock seams and a covered elastic waistband keep it comfortable against skin all day.

• 100% Merino wool interlock fabric provides natural warmth, breathability, and odor resistance without synthetic additives
• Flatlock seam construction sits flat against the skin and eliminates chafing during high-movement activities like hiking and skinning
• Classic fit with covered elastic waistband layers cleanly under shell pants, ski bibs, or hiking softshells without bunching
• Merino's natural temperature-regulating properties make this bottom equally effective on cold morning approaches and warmer afternoon descents
• Available in a wide range of colors — from neutral Black and Charcoal Heather to Deep Navy, Emerald Green, and seasonal prints like Black Digi Snow and Nightfall Linear Peaks — in sizes XS through XL