⌚️【Compatibility】Only fit for Fit bit Luxe/Fitbit Luxe Special Edition. ONLY. (Tracker is not included). Please Make sure your watch model & select the correct size. ⌚️【Band Size】Small size fits for 5.1"-7.1"(130mm-180mm) wrists; Large Size fits for 6.1"-8.7"(155mm-221mm) wrists; The size can be adjusted according to the circumstance of individual wrist，Perfectly fit for runing, swimming, riding, workouts, parties, climbing, hiking, traveling and more outdoor activities. ⌚️【Install & Adjust Simply】This wristand is super easy to remove and install. Easy and direct installation and one button removal.We added an extra loop. Our notch is also designed little longer to make it attached super tight. Never going to loose and fall off. ⌚️【Environmental Material】High-class silicone material makes the band Lightweight and Water-proof; Compression molding process, sturdy and durable, the softness is moderate, wear very comfortable. ⌚️【What's included】1pcs band( (Note:tracker not included) Closure: button