Product Note:Fit for 26mm Fenix 8 51mm/Fenix 7X/Fenix 5X/Fenix 5X Plus/Fenix 6X/Fenix 6X Pro/Fenix 3/Fenix 3 HR/Descent MK1/D2 Delta PX/D2 Charlie Smartwatch.Please check the model on the watch back before buying. Compatible Size：Fits wrist between 6.7 inches-8.85 inches (170mm-225mm).Please measure your wrist and make sure the size before you purchase. Fit Securely： Made of high quality Soft Environmental silicone, No peculiar smell and harmless，No Extra Edge to hurt your hands, the 26mm Silicone band for your watch with secure clasp will protect it from slipping off, fits great and more securely when you biking or working out. Convenient for daily wear: No extra screws needed,Just put on or take off the band by your hands. What we can promise to our customers is that we provide better quality products and customer services. Any problem with the item you receive or any opinion, please don't hesistate to contact us, we will find the best solution to solve. Product Note:Fit for 26mm Fenix 5X/Fenix 5X Plus/Fenix 3/Fenix 3 HR Smartwatch. Pls note that this 22mm band WON'T fit the Fenix 5 or 5S. Installation Steps: Step 1. Push and hold the button in the connection part. Step 2. Put it into the connection pin and release the button. Step 3. Lock the other side to the watch. Finished.