This high-elasticity I-shaped silicone strap is specially designed for the Apple Watch Ultra 49mm, while also being compatible with the 42mm/44mm/45mm/49mm and Ultra series. The strap is made of high-quality silicone material, offering excellent flexibility and durability. Paired with a titanium-colored stainless steel buckle, it not only provides a comfortable fit but also exudes a stylish and sophisticated look. Whether for daily wear or sports activities, it ensures a secure and comfortable wearing experience.