This modern leather watch strap by Apple looks like you close it with a buckle. The watch strap actually has a two-part magnetic clasp. You can easily adjust the closure to the right size, so the strap fits everyone's wrist. The leather has a layer of Vectran on the inside. This provides extra stretch and firmness. This leather strap will give your Apple Watch a classic look. This strap is made for the Apple Watch 40mm, and is suitable for a wrist of 160 - 180mm. This is an original Apple accessory.