JJC Eyepiece / Eyecup / Eye cup Viewfinder for Canon EOS 5D Mark III/5D Mark IV/5DS R/5DS/7D/7D Mark II/1D X/1Ds Mark III/1D Mark IV/1D Mark III Camera, Replaces Original Canon EG Eyepiece Made from soft and durable silicone + high quality ABS Provide cushioning around the camera's eyepiece, and are especially useful to eyeglass wearers Mounts easily and securely to camera's viewfinder Spare or Replacement Eyepiece It Replaces original Canon EG eyepeice, compatible with Canon EOS 5D Mark III, 5D Mark IV, 5DS R, 5DS, 7D, 7D Mark II, 1D X, 1Ds Mark III, 1D Mark IV, 1D Mark III