With metal Apple Watch straps, you can give your Apple Watch a fancy, business look. Choose a delicate mesh strap or go for a more rugged Link Bracelet. When choosing a metal Apple Watch strap, make sure you choose the right size for your watch case. The Apple Watch 38, 40, 41, and 42mm straps fit on each of these sizes. The Apple Watch 44, 45, 46, and 49mm straps fit on each of those sizes.