Exceptional Apple Watch Band: Combining Carbon Fiber And Aramid Fiber For Durability And Comfort. Compatible With All Apple Watch Models Including Series 9-1, Se, And Ultra 2/Ultra. Made From Carbon Fiber And Aramid Fiber. Size: 42/44/45/49Mm & 38/40/41Mm. Adjustable Watch Band Bracelet Length. Lightweight And Comfortable. Patented Secure Magnetic Clasp.