Super Velvet Wool & Rubber Crumb Carpet Underlay concrete gripper Arbiton Expert will successfully reduce Arbiton Expert will successfully reduce a high level of noise reduction in the room you place it in we would recommend using underlay with this carpet to make it feel more comfortable underfoot and offer extra protection Super Velvet carpet underlay is the texture of 80 20 soft Wool Nylon felt blend on top which is then coated in a deluxe layer of Rubber Crumb making it one of the softest and most comfortable carpet underlay Its thickness of 12mm helps reduce impact noise and the density of the underlay helps reduce acoustic airborne noise up to 48dB