From durability silicone rubber, this eyecup offering a comfortable fit and excellent abrasion resistance, ensuring long time protecting against impacts and scratches For professional photographers, photography enthusiasts, and users engaging in prolonged wearing enhances viewing Perfectly for outdoor photography, travel, studio, and any environment requiring precise framing and clear visiual Easily and securedly attaches to your viewfinder, making it excellent backup or replacement accessory for maintaining optimaled camera Protector For camera ' s viewfinder with the EP18 Eyecup, to shield against dirt,,, and unwanted light for models like A7R and more