Keep Cool with High Tech Style. When the weather is hot, you'll be glad to have this running accessory in your wardrobe. Made from our DriLayer Steady thermoregulation fabric, these running headbands are designed to wick moisture away from your skin and keep you up to 30% cooler. The fabric also stretches to easily keep hair in place. Go ahead, turn up the heat on your next workout with these running headbands that keep their cool.