This is a black silicone strap designed for smartwatches with a width of 42mm-45mm. It is a great accessory for those who want to personalize their smartwatch and make it more comfortable to wear. The strap is made of high-quality silicone material, which is durable and soft to the touch. It is easy to install and remove, making it convenient for users who want to switch between different straps. This strap is compatible with a wide range of smartwatches, making it a versatile accessory for any tech-savvy individual.