The Perfii Silicone Replacement Band is designed for the Apple Watch Series 8, 7, 6, 5, 4, and the SE. It is available in sizes 49454442mm, providing a perfect fit for different Apple Watch versions. The band is made from high-quality silicone material, which is comfortable to wear and resistant to sweat and water. It also features a secure locking mechanism that ensures the band stays in place during activities. With a variety of color options, the Perfii Silicone Replacement Band allows you to personalize your Apple Watch and match your style.