Reduce unnecessary noise and : Our sound foam panel can help reduce reverberation, flutter , unnecessary sound reflection, eliminate unnecessary noise and scatter mid- and low-frequency sound waves in the room to reduce interference. Don' worry about being disturbed by neighbors' noise. The difference: Are you still worried about finding tapes all over the world? The biggest difference among other sound insulation foams on the market is that our acoustic panels are self-adhesive. If you have tried our sound insulation foam before, you will know how easy it is to install. The acoustic panel will help you a lot. High-quality materials: made of high quality material, a truly environmentally friendly choice. We on using high-quality sound insulation materials to ensure odorlessness, corrosion resistance and fading resistance. Flame retardants will slowly spread during a fire and reduce the intensity of the fire. Produce higher-quality audio: for professional acoustic control, sound absorption and reduction of reverberation. Make your voice more dynamic and improve sound clarity. Suitable for studios or offices, home/recording studios, vocal kiosks, control rooms, home theaters, professional cinemas, concert , KTV, etc. It is very suitable for home studios and professionals. Triangular foam design: These sound-proof foam panels, each tile is 2 square feet, 2 inches thick acoustic wedges, and 12 packs cover an area of 3 square feet. Restoring shape: 1. Put it on the table and wait for about 24-72 hours to return to use naturally. 2. If it does not rebound, please immerse it in water and gently wipe or dry it. color:Black Material:polyurethane size:30 x 30 x 5cm Package Contents: 12 x Soundproofing Foam(The color of the adhesive is random, and the specified color cannot be selected) 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.