Fstop Labs Acoustic Panels, 2″ X 12″ X 12″ Acoustic Foam Panels, Studio Wedge Tiles, Sound Panels wedges Soundproof Foam Padding Sound Insulation Absorbing Home and Office (24 Pack, Black)

[REDUCE NOISE]: Our 3D acoustically designed 2-inch sound absorbing panel/sound proofing padding for wall helps break up sound waves providing the ideal level of moderate sound control on walls or ceilings.
[REDUCE REVERB]: At 50/lbs per cubic yard, these sound dampening panels effectively absorb unwanted flutter echoes. Made up of non-toxic environmentally friendly polyurethane sound proof foam at 50/lbs per cubic yard.
[EXPANDS QUICKLY]: Our sound proof foam panels come compressed in a vacuum package and quickly recover to normal size, either by placing in a well ventilated place for about 24-48 hours or soaking the sound foam in water for one minute then wringing the water out and using a hair dryer or letting it air/sun dry.