Color:Blue and Red<br />Material:rubber<br />Suitable for heart rate tracker<br />Durable and waterproofand<br />Smooth touch feeling and breathable<br />Light weight， perfect fit when you're doing sports<br />Easy to install and remove， no tools needed<br />Convenient to adjust the length to fit your wrist flexibly<br />Fashion look， ideal for sports fans， business users， etc<br />Wrist Circumference: Approx. 14-19.5cm/ 5.51-7.68''(Adjustable)<br />Band Width: Approx. 1.5cm/ 0.59"<br /><br />Package Including:<br />1 pair of straps<br />