The Walker's Razor Slim Passive Earmuffs feature low profile ear cups for passive support as well as comfort headband with metal wire frame designed for variable adjustability. The Razor Slim also features a rubberized coating as well a sound dampening composite housing for ultimate protection. Stay safe and confident in the the Walker's Razor Slim Passive Earmuffs. FeaturesUltra Low Profile Ear CupsRubberized CoatingCompact Folding DesignComfort headband w/ metal wire frameSound dampening composite housing27 NRR