Fits all sizes & series Apple Watch: Our officially licensed smartwatch straps for Apple Watch include 2 sets of connectors to accommodate both 38/40/41mm and 42/44/45 mm case sizes of Apple Watch Series 1, 2, 3, 4, 5, 6, 7, 8, Ultra & SE, as well as Android and other smartwatches with a 22mm pin. High-quality, long-lasting materials: Made with sweat and UV-resistant high grade silicone, our smartwatch bands are tough while feeling smooth and made to last as long as your fandom. Universal fit: Designed for a comfortable, universal fit on most wrists - our straps fit wrists ranging from 5.5"- 8.2" (13-22cm).