1. The eyecup works as a cushioning around the camera's eyepiece which provides a protection for the camera's eyepiece.
2. No matter you wear eyeglass or not the hollow of the eyecup is comfortable for your eyelid contact and your glasses.
3. High quality plastic material it impress you a comfortable feeling following a pleasant experience.
4. Compatible with Sony A7 / A7R / A7S / A7M2.