Field Optics Research EyeShields Birders Eyecups (Triple Pack)Key Features Angled Design Flexible Rubber Construction Includes Five Eyecups The triple pack of EyeShields Birders Eyecups from Field Optics Research includes two sets of angled rubber eyecups for binoculars and one eyecup for spotting scopes. The angled shape of the EyeShields enhances the viewing experience with your optics by blocking stray peripheral light that can create glare on the lens surface of the ocular. The flexible rubber material