The Spotting Scope Eyeshield from Field Optics Research is a flexible rubber shield that blocks light, dust, wind from your peripheral vision. It will also reduce distractions and elminate ambient light from causing lens glare at the eyepiece. The angled shield fits over eyecups with outside diameters of 1.1" to 1.46".
In the Box
Field Optics Research Eyeshield Spotting Scope Eyecup