1.Material nylon 2.Metal type stainless steel 3. Tang Buckle boiler type 4. The 49mm/Apple Watch series is compatible with 10 46mm 42mm, compatible with all versions of Apple Watch. (Note: Smart watch is not included.) 5. [Breathing and comfortable nylon material] Smart watch bands for Iwatch bands 10, skin -friendly weaving nylon made of nylon elastic material, light and breathable, durable and comfortable to wear. Elastic braided bracelet bracelets can prevent the skin from irritation. Special braided design makes groups look more elegant, younger than the original strap for Iwatch. It is suitable as a special gift for family and friends on Christmas, Valentine's Day or holidays on birthdays. One body, most of the wrists, 38/40/41mm/(42mm series 10) IWATCH 40mm 40mm 4.5inch-9.5inch wrists, 41/38/(42mm series 10) works for the wrists. 44/55/46/49mm/(42mm Series 3 2 1) Apple Watch 44mm 44mm 4.5 inches-9.5 inches compatible with wrist, and works for 45/46/(42mm series 3 2 1)/49mm. Just move the closure to adjust to the full size of your wrist. Free size for both women and men. It can effectively prevent the fall and relaxation of sports bands. A secure stretch bracelet bracelets compatible with Apple Watch strap for women men. The installation is simple and direct, no tools are required by removing one click.