Auralex Acoustics Portable Acoustic Treatment Panels for Podcasting, Voiceovers, Video Blogging and Educational, Charcoal, 2x4 (PROMAXV2CHA) Flexible, portable absorption for professional & residential settings Reduce unwanted acoustical reflections, tame chaotic reverberation Adjustable height w/ included mounting stands Perfect for podcasts, video bloggers, home studios, recording studios and loud conference rooms Panels are 2ft x 4ft x 3in (thickness)