The Spigen Rugged Armor Pro Military Gold Apple Watch Case Band Series is a TPU material fitted case/skin designed for Apple Watches in the 38/40/41mm series. It features a metallic finish and is compatible with Apple brand watches. The case is easy to install and remove, with a comfortable grip and perfect fit. The product also comes with a manufacturer warranty. However, it is important to note that this product contains Nickel (Metallic) which is known to cause cancer according to the State of California.