[Compatible Models]---The stretchy silicone band is compatible with Apple Watch Series 8, Series 7, Series 6, Series 5, Series 4, Series 3, Series 2, Series 1, iwatch SE, Nike+, Sport, Edition. In order to meet the needs of customers with different wrist sizes, we have designed three sizes for the 38mm/40mm/41mm and 42mm/44mm/45mm bands-- Small, Medium, and Large. | [Premium Material]---This Apple watch sport band is made of high-quality silicone. Unlike other silicone straps, it is elastic and flexible, so it can be stretched easily. Soft, comfortable, durable, sweat-resistant and waterproof, and will not irritate your skin. | [Available Size]---For the 38mm/40mm/41mm Apple Watch, the S size is fits for 144mm--154mm wrists; the M size is fits for 163mm-173mm wrists; and the L size is fits for 178mm-186mm wrists. For the 42mm/44mm/45mm Apple Watch, the S size is fits for 161mm-171mm wrists; the M size is fits for 180mm-189mm wrists; and the L size is fits for 200mm-208mm wrists. So before buying our sports wristband, please measure your wrist size first to ensure that you can choose the size that suits you. | [Easy to Install/Remove]---The elastic band is designed with new upgraded technology, and there is no buckle or buckle on the strap, making it easier to put on and take off. There are lugs on both ends of the strap, without any tools, it can be accurately and safely locked on the iWatch interface and removed with one click. | [Customers Service]---We are committed to providing high quality products and services. If you have any questions or dissatisfaction with our elastic silicone bands, please contact us in time, we will help you solve the problem within 24 hours.