This extra long heart rate strap is compatible with the TRACKR HEART RATE MONITOR. The soft, elastic material minimizes the chance of chafing and is easily hand washable. The two-snap connection is simple to get on and off, and the straps adjustable length gives you a secure, reliable fit. Strap Weight: 1.13 oz. Sweat Proof: Yes (handwash only). Strap Length: Standard: Adjustable from 67 cm - 88 cm. XL: Adjustable from 72 - 102 cm. In the box: 1 TRACKR Replacement Heart Rate Strap. Note: This item cannot be returned or exchanged unless defective. Heart rate sensor pod not included. Controlled Comfort Standard Replacement Lenght TRACKR HEART RATE offers a slim, soft, secure fit strap that feels natural while also keeping the sensor securely in place during intense exercise to ensure accuracy Good product with good quality Value for money.