<ul> <li>Stretch nylon breathable strap compatible with apple watch SE/series 7, series 6, series 5, series 4, series 3, series 2, series 1 (not including smart watches).38mm/40mm/42mm/44mmsize strap fits 5.1-8.3 inches wrist(130mm-210mm).</li> <li>Metal buckle on the elastic band can easily adjust the length of the nylon elastic band on the left and right parts,choose the size that fits the wrist. The non-hole design prevents holes from getting stuck. Easily tighten or loosen, will not fall, suitable for most people.</li> <li>Elastic strap is woven from soft, breathable nylon material, which has a more comfortable texture than metal and silicone. The weave is finer and more durable. Waterproof and sweatproof, it is easy to dry after washing.</li> <li>Separate metal lugs on both ends of the strap, which can slide in and out easily, and accurately and firmly clamp the two ends of the Apple Watch. You can easily and safely lock your watch without other tools.</li> </ul>