Durable, non-skid textured tiles protect floors while creating a comfortable workout spac, puzzle pieces connect quickly and easily, and can be disassembled just as simply for quick storage. Foam tiles connect easily and can be disassembled just as simply for quick storage. Thanks to the puzzle piece edge design, the interlocked the mats stay firmly in place. They are easy to clean with just a damp cloth and mild soap. Working Principle: High-density flame-retardant material that is 30 percent higher than the industry standard, by increasing the noise absorption characteristics in the room, significantly reducing the transmission of noise through the walls, thereby reducing the noise outside the room. At the same time, it can also improve sound quality: by absorbing harmful sounds, reducing fluctuations, reverberations and vibration echoes, making useful sounds clearer. Widely Use: cost-effective noise reduction products can create an excellent listening or recording environment .You can use the acoustic foam panels for Recording Studios, Vocal Booths, Home Theaters.Great Use For Media Content (You Tubers or Music Edit and Recording, Video Gamer). Used to acoustically treat walls or, most commonly ceilings. Even you can use it for sound proof padding. Colour: Black and Blue Material: Polyurethane Cotton Size: 30x30x3cm Package Contents: 6 x black sound-absorbing cotton 6 x dark blue sound-absorbing cotton Only the above package content, other products are not included. Note: Light 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.