The multi-functional helmet bag of the car model is very powerful and can be used for show.The size system is suitable for all common tactical helmetsUniversal rear seat fits all common battery packs/counterweightsExclusive rear seat provides exclusive seat for batteryOutlet holes for all commonly used NVG battery box cables/switchesNext-generation thin central rubber band for IR strobe lights, cameras, etc.Integrated cable management channelBridge the helmet velcro patterns inside and outside the helmet to form a solid attachment platformEasy to arrange-can be mounted to the helmet in secondsProprietary universal rear hatch and central fixing deviceBack ring suitable for AA and CR123 NVG batteries(NOT included)