Fit Size:38mm fits 5.3"-7.7" (130mm-195mm),40mm fits 5.9"-8.4"(150-215mm) wrists, suitable for both men and women. There are ten holes to adjust, very practical and convenient. | Special Features: The connector of the strap is made in a color similar to the watch, Make your watch look perfect. (Tips: The rose gold connector uses an upgraded electroplated gold buckle, which can better extend the use time). | Superior Quality: Made from High quality leather, Unique line design, not easy to fall off, simple and comfortable, suitable for all occasions. | Compatible Models: Compatible with iWatch Series 5/4/3/2/1 Edition. | Tip: due to lighting and other reasons, there will be slight differences between the physical object and the pictures displayed on the website, but they are basically the same, the quality, style and content is the same as the website. The leather strap will wrinkle after long-term wearing, which is a normal phenomenon. If there is any problem, please let us know and we will try our best to help you solve it.