Buckle closure The band fits most versions of the Apple Watch. Sizes include 45mm/44mm/42mm/41mm/40mm/38mm and models include SE/SE2/Series 8 7 6 5 4 3 2 1. Small band fits 160-210mm wrists and large band fits 180-230mm wrists. Please choose according to your wrist size. Our products are made of high quality silicone, with excellent waterproof performance. You can wear it in different occasions, such as swimming, running, studying, shopping, parties and more. We use Apple's original band for 1:1 mold making to ensure that the strap can perfectly match your watch. It is easy to install and remove. The buckle of the band is made of high-quality stainless steel, which won't rust or be squeezed. And we use heat transfer technology to ensure that the pattern won't fade in daily use.