Compatibility: The leather strap is compatible with Fitbit Charge 3 and Fitbit Charge 4. (Fitness Tracker is NOT included) Skin-Friendly Leather: 100% genuine calf leather strap - soft and comfortable to touch. The wristband compatible with Fitbit Charge 4 strap is durable, breathable and no peculiar smell, bring you a good wearing experience when you exercise or leisure moments Suitable for Many Occasions: Soft genuine calf leather matched with rosegold stainless steel connectors, making your Charge 3/Charge 4 much more classic but elegant and charming from business work to casual life. You can wear your fashionable fit bit charge 4 strap at work, parties, sports and other occasions Adjustable Size: CeMiKa leather strap compatible with fitbit charge 4 strap, fits 6.3 "- 8.1" (160mm-205mm) wrist. Suitable for men, women, boys, girls or the elderly. The wrist strap with precise multiple alternative holes allow you to adjust the length freely according to your wrist. Multiple colors give you a variety of choices to fit your every day outfit and mood Secure Design & Simple Installation: The watch band compatible with Fitbit Charge 3 strap is compatible with the standard Fitbit quick-release mounting system - so the strap can lock onto your watch interface securely and precisely. Don't worry about the strap falling off even during sports.