Ready for winter's swirling gusts and dipping mercury, Smartwool's women's Intraknit Thermal Merino Base Layer Bottoms will help you stay warm, active, and protected for all of your backcountry adventures.

These Intraknit bottom's feature Merino Sport yarn, a fabric created by combining the comfort and durability of Merino wool with the strength and durability of polyester, serving up insulation, motion-mirroring mobility, and plenty of ventilation. If you're a high-output athlete, whether that comes on singletrack or skintrack, these bottoms will keep you moving in comfort and warmth.

Specs

• Slim fit is intended to follow the contours of the body during high-output activities
• Intraknit technology boasts insulation, articulation, and ventilation
• Merino Sport yarn combines the power of Merino with the durability and fast dry times of polyester
• Seamlessly knit mesh ventilation designed to keep you dry and comfortable
• Fitted with a mid-rise waist with a 31" inseam (size medium)
• Made with 52% Merino Wool / 45% Polyester / 2% Elastane / 1% Polyamide