The extended-length of the soft, thick silicone conforms to the shape of your eye to create a tighter and more comfortable fit whether you're shooting with the naked eye or wearing glasses Helps block unwanted stray light from the viewfinder, resulting in better contrast, reduced glare, and an overall enhanced user experience An upgraded eyecup over the standard camera's original eyecup, its increased depth is nice for blocking more light outdoors, and helpful for keeping nose smudges off the LCD screen Compatible with Canon EOS R5, R5C, R6, R6 Mark II cameras (Note: NOT for Canon R5 Mark II camera) Package includes: long soft eyecup x 1, screwdriver x 1, screw x 4