Athleta Altitude Tight in Polartec Power Stretch Legging Altitude Dark Heather Gray Size 1X Excellent used condition! Fleece lined SUPER cozy leggings. The Altitude Tights from Athleta provides great, comfortable stretch and thermal insulation for cold-weather workouts. Made with Power Stretch®, a performance-fit fabric that retains shape no matter how much you work. It's part of Athleta's mission to ignite a community of active, healthy, confident women and girls who empower each other to reach their limitless potential.