The size can be adjusted according to the condition of the wrist, so the watch band is convenient to use. This new and two-color matching watch strap is environmentally friendly, soft and comfortable to wear, and it has a simple and generous look. Made of silicone high quality material, it is soft and comfortable to use. The length of this product is 123mm+74mm and the width is 29mm. It is suitable for Polar V800. Item Name: Watch Band Material:Silicone Compatible Models: for Polar V800 Size:12.9cmx2.9cmx0.3cm/5.08inx1.14inx0.12in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Shipment does not include the watch host. Due to manual measurement, different measurement methods and tools may have slight dimensional deviation. Due to the different shooting light, angle and display screen, the image may not reflect the actual color of the product. Due to manual measurement, please allow a difference of 1-3mm. Package Includes: 1 X Watch Strap(Watch Not Included) 2 X Connectors