Link your eye to the camera and comfortably seal out ambient light with the Eyecup for Sony Alpha a7 and a9 Digital Cameras from Hoodman. The eyecup cups relieve eye fatigue during long outdoor shooting. Specifically designed to replace OEM Sony Alpha a7- and A9-series eye pieces, these eyecups are built to last and are made of hypoallergenic silicon rubber for comfort. Additionally, you can easily upgrade your camera eyepiece in just a few seconds.