1. Material: silicone
2. Thickened design, durable
3. The length of the strap is easy to adjust
4. Waterproof, sweatproof, comfortable and soft
5. The material is not harmful to human skin and is not allergic
6. For apple watch1/2/3/4/5/6
7. Weight: 38mm: S 11.6g, L 12.6g, 42mm: S 14.2g, L 15.8g
8. Size: 38mm: S size (89+104mm) x38mm, L size (89+128.6mm) x38mm, 42mm: S size (89+109mm) x42mm, L size (89+137mm) x42mm