For Apple iWatch Slim-fit Single-turn Top Layer Real Cowhide Strap 38/40mm Features: Compatible with iWatch strap 38 mm / 40 mm: The high-quality silicone strap is suitable for watch sizes of 38 mm and 40 mm. The smart strap is compatible with Apple Watch SE Series 6 Series 5 Series 4 (40mm), Series 3 Series 2 Series 1 (38mm) Comfortable and breathable: The replacement strap is made of high-quality leather. leather is a light and soft material, which is different from heavy metals. This type of material is lightweight, keeps the bracelet dry during exercise, and is friendly to the skin. Easily adjust size: The sports strap is suitable for wrist sizes from 151 mm to 215 mm. It has a strong elastic band that is easy to put on and take off. At the same time, you can adjust the length of the strap according to the size of your wrist. Quick installation: Quick and easy to install. Slide in-slide out installation No additional tools are required. The sports ring is suitable for many occasions, including swimming, fitness, running, camping, mountain climbing, hiking, parties and daily wear. Material: leather Application: For Apple Watch Series 6/SE/5/4/3/2/1 38/40mm Suitable wrist size: 5.94"-8.46"(151mm-215mm) Include : 1 * watch belt