Thank you for coming to our shop, I hope it is to your satisfaction Category: Heart Rate Monitor Chest Strap Material: Nylon, Spandex Peculiarity: Accurate, Adjustable, Durable Size: 15cm x 15cm x 5cm/5.91" x 5.91" x 1.97" (Approx.) Instructions: Comfortable chest strap for heart rate measurement, suitabe for Polar, for Wahoo and for Garmin products. The intelligent fusion of soft fabric and adaptive electrodes makes it very sensitive and becomes an indispensable part of a heart rate monitor. The most popular heart rate belt in the world is easy to use, very durable. Kindly Remind: Due to light and display, there may be slight differences between the picture and the actual color of the product. The color is subject to the goods received. In addition, please allow slight size difference due to manual measurement. High quality, assured choice is guaranteed! Package Contains: 1 x Heart Rate Monitor Chest Strap