1. Made of high-quality PVC material, it is durable. 2. It can protect the lens from stray light, thereby improving contrast and image quality. 3. It can help prevent moisture or wind-blown debris from leaving the lens. 4. It can protect the front lens barrel from the inevitable impact of hitting walls, door frames and other real-life obstacles. 5. Suitable for Nikon Z-DX 16-50mm f3.5-6.3VR lens