The Canon EF Rear Lens Cap fits all Canon EF lenses and will help protect the rear element from dirt and scratches. It's well worth popping a spare into your camera bag!
This Zeiss Rear Lens Cap is for use with Zeiss CP.2 compact prime lenses that have a Canon EF mount. It is designed to protect the back of the lens from dust, grit, and scratches.
This JJC Rear Lens Cap / Body Cap Comb consists of a Canon EOS-M fit rear lens cap and SLR body cap. These are useful to have as a spare or replacement in case your original caps are lost or damaged.