Suited for the cold conditions, the Icebreaker 260 ZoneKnit Leggings bring reliable warmth into your lineup of base layers. With a snug, close-to-body fit for low-bulk layering these leggings use ZoneKnit™ body mapping technology, aka the secret sauce, to help you maintain and consistently comfortable temperature when you're movin' and groovin' up and down the mountain. Plus, the flatlock seams and high-quality Merino wool ensure your new favorite layer stays in good condition even after you've lost count of the number of wears you're getting out of it.