DEI 20-22 Jeep Gladiator JT 4-Door Boom Mat Complete Headliner Kit - 7 Piece - Black Leather LookRiding in a Jeep(R) Gladiator is great fun except for the truck's propensity for interior noise that makes it difficult to engage in conversations or even enjoy vehicle audio systems. Now there is an easy solution. Boom Mat's new Jeep(R) Gladiator Sound Deadening Headliner provides a simple pre shaped peel and stick kit that dresses up the interior of Jeep hard tops while minimizing annoying outside noise and vibrations while insulating from exterior