features:<br />-  and high quality.<br />- 2" wedge foam is most effective on mid-to-high frequency ranges. <br />- deformation rebound rate， long service life.<br />- waterproof， anti- moisture， flame-retardant and good air permeability.<br />- anywhere to help block sound and prevent echoes inside the room.<br />- effective against standing waves and flutter echoes in most small-to-medium sized rooms.<br />- provides strong noise reduction， good for use in vocal booths， control rooms and studios.<br /><br />specifications:<br />material: polyester<br />color: black， blue<br />size:30 x 30 x 5cm/ 11.81 x 11.81 x 2"<br />quantity: 6pcs<br />product care: occasional vacuuming of dust<br /><br />packaged included:<br />6x soundproofing wedge foam sheets