This Heart Rate Belt features a comfortable and soft strap made of nylon and spandex, ensuring over 15 hours of comfort for walking, light jogging, or long-distance running. It displays heart rate his more→tory on your mobile phone, app, or watch, making it easy to monitor and record your workout performance. With easy-to-adjust and stretchable universal size up to 100 cm, the strap is great for both men and women. It is waterproof and sweat-resistant
