This silicone sport band is designed for various Apple Watch models, including the Ultra 2, Ultra, Series 10, 9, SE, 8, 7, 6, 5, 4, 3, 2, and 1. It fits multiple case sizes such as 49mm, 46mm, 45mm, 44mm, and 42mm. The band is waterproof, making it suitable for active use and outdoor activities. Its lightweight and flexible silicone material provides comfort during daily wear. The adjustable strap ensures a secure fit for different wrist sizes. This band offers a practical and stylish option for those looking to customize their smartwatch with a durable and comfortable strap.