Dodo Mat DEADN Hex Sound deadening mat, 12 Sheets, 12 sq.ft (1.1sq.m), car & Van Sound proofing, Vibration Damping12 Sheet Sound Deadening Pack with high grade butyl construction and Hex embossed aluminium High quality vehicle sound deadening designed in the UK & manufactured in Europe The unique Dodo specification chemistry of the synthetic butyl core effectively deadens panel vibration without the excessive bulk of competitor products Stop rattles, Vibration & noise Lower vehicle road, Exhaust, Engine & transmission noise Very soft & flexible for easy