acoustics foam adopts higher density material, which means it has better sound absorption. By increasing noise absorption properties to reduce noise mission , and can also effectively reduce the reverberation, flutter , undesirable acoustic reflections etc. in the room Acoustic panels have self-adhesive on the backs, you just need to peel and stick on, and without extra tools or materials Soundproof foam adopts ten-slot design, which is more fashionable and beautiful than traditional soundproof foam, can double as your decorative wall art Self-adhesive acoustic foam can be installed to a variety of different surfaces (walls, doors, , ceilings, etc.), suitable for recording studios, offices, home theaters, vloggers, rehearsal rooms, game rooms, and more. Acoustic panels can be easily cut to the size you want without compromising the performance of the acoustic foam When recording your voiceovers, music, interviews, videos, soundproof wall panels can help you reduce background noise and echoes, and also enhance the acoustics of the room to improve your audio quality. More sound foam panels and the effect are better Adhesive color random, do not accept specified Colour:Black & Gray Material:polyurethane Size:About 30x30x2.5cm Package Contents: 12 x Acoustic Panels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.