Smartwool Women's Classic Merino Base Layer Bottom Boxed - Black - XS

On a frigid morning at the ski resort, you pull on the Smartwool Classic Merino Base Layer Bottom and feel immediate warmth without bulk. These women's thermal leggings are made from 100% ZQ-certified Merino wool, offering natural temperature regulation and odor resistance for all-day comfort on the slopes or trails.

Key specifications

• Material: 100% Merino wool (250 g/m² interlock knit)
• Fit: Slim fit, full length
• Waistband: Covered elastic
• Seams: Flatlock to prevent chafing
• Color: Black
• Size: XS
• Care: Machine wash warm, tumble dry low

Why choose it

Merino wool naturally wicks moisture, dries quickly, and resists odors, keeping you fresh through high-output activities. The midweight fabric provides substantial warmth for cold conditions while remaining breathable to prevent overheating. Flatlock seams and a covered elastic waistband ensure a smooth, irritation-free fit under outer layers.

Ideal use cases

• Skiing and snowboarding
• Winter hiking and snowshoeing
• Cold-weather running or cycling
• Everyday warmth under casual wear

Good to know

ZQ certification guarantees ethical wool sourcing and high animal welfare standards. The interlock knit construction adds durability and a soft hand feel. Pair with the Smartwool Classic Merino Base Layer Top for complete thermal protection.