Designed to go the distance, no matter the conditions, the Smartwool Women's Intraknit Merino Thermal Leggings use a stretchy blend of Merino wool and polyester with Intraknit™ technology for targeted ventilation, articulation, and insulation during action-packed adventures. Fitted with a ribbed waistband for textured security, the high-waisted design brings both a modern look and extra cold-weather coverage.