Shield your viewfinder from stray light when shooting in bright conditions to ensure clear view. Made from Polycarbonate Silicone rubber, this eyecup provides soft and comfortable cushion when against your face. Benefits Shields stray light from entering viewfinder Comfortably hold close to your eye for longer thanks to the polycarbonate silicone rubber which provides cushioning Incredibly lightweight and easy to secure to your camera What\'s in the box ER-h Eyecup Compatibility EOS R3