Tennis Pro Headband Size:One Size The Pro 4's innovative stability

The Pro 4's innovative stability system provides enhanced control and balance

smooth fabric and an exposed elastic band at the bottom that helps keep everything in place

A classic jogger fit that tapers through the leg is paired with an elastic waistband to provide a comfortable fit that moves with you

The watch constantly samples your heart rate and will alert you if it stays too high or too low while you are at rest

Tennis Pro Headband Size:One Size The Pro 4's innovative stabilityTennis headband made of technical fabric. Embellished with a contrasting logo, it is lightweight and comfortable, making it perfect for training sessions. Fabric: 90% polyester, 10% elastane