On Tights Long Women's Running Apparel Black/Twilight : Meet your new favorite running tights! Made from recycled polyamide materials, the On Tights Long provide high stretch, low weight and a gentle compressive feel. Enjoy warmth during cool days and lightness for year-round comfort. Combine with other On apparel items for all-weather protection. Stretchy and comfortable, the On Tights Long are a true running essential! Buttons connect with the On Waterproof Pants, Waterproof Shorts or Hybrid Shorts (men's only). Hidden zip at leg opening for easy step in. Supportive shape, wide waistband and a built-in key loop. Inserts above knees keep sensitive tendons warm.