HoodEYE eyecups link your eye to the camera by comfortably sealing out ambient light. HoodEYEs help reduce eye fatigue. You can easily upgrade your camera eyepiece in just a few seconds. The self-locking mount keeps HoodEYE on your camera. Regular and Glasses HoodEYE eyecups rotate to accommodate right or left eyed shooters. If your camera body has an articulating LCD screen we suggest using the Flat Bottom Z Eyecup on your camera. All Eyecups are made of hypoallergenic silicon rubber for comfort.