The DC PRO-S, ultra lightweight, passive noise attenuating headset features advanced comfort and performance features for commercial pilots. Singe ear design permits hearing of ambient sound and cockpit conversation between pilot and co-pilot. The DC PRO-S headset comes with a 30 day, money back guarantee.Features Soft, Outlast technology, heat absorbing head padPlush, rest-on-ear (supra aural), leatherette ear seal and temple pad reduce heat buildupRugged, yet lightweight alloy suspensionVolume control located on ear dome