Generic EB Eyecup Eyepiece for Canon EOS 1000D 60D 50D 40D 30D 20D 10D 6D 5D Mark II It works as a cushioning around the camera's eyepiece, which provides a protection for the camera's eyepiece No matter you wear eyeglass or not, The hollow rubber of the eyecup is comfortable for your eyelid contact and your glasses It impress you a comfortable feeling following a pleasant experience. This Eyecup is a replacement of Canon Eyecup EB.