Nikon 16141 Fog Klear Anti-Fog Microfiber Cloth The Nikon Fog Klear Cloth is a soft microfiber cloth with an anti-fog compound embedded in the fibers. It inhibits fog from clouding your lens, binoculars, or viewfinder. The cloth works by leaving a microscopic film of the anti-fog compound on the lens which prevents the build-up of condensation. Type: Anti-Fog Cloth Quantity: 1 Kit Material: Microfiber