Nike One Therma-FIT Fleece Headband – warmth and comfort during training A lightweight and functional training headband designed for activity on cooler days. Nike Therma-FIT technology helps retain natural body heat, while the soft Tech Fleece material provides comfort and protection from the cold and wind. Material: 100% polyester (Tech Fleece) Nike Therma-FIT technology to help retain warmth Stretch construction for a comfortable fit Additional ear coverage for greater thermal comfort Lightweight, breathable and quick-drying construction One size fits all