Easy to Install - Our soundproof wall panels comes with self-adhesive, tear off the double-sided tape on the back and use it immediately. Save your time and money. Please noted that firmly after sticking to the wall to prevent falling off. Fast Expand - Compared to other different sound panels, our insulation foam recover faster. 100% high density new polymer rebound material different(2.2 lb/ft3). No more waiting 2-3 days in the washing machine. Affordable Soundproofing Practices - Our acoustic foam panels absorb sound waves that reflect off of hard surfaces. The result is a smooth, quiet environment. Noise reduction acoustic foam, although not 100% soundproof, allows you to enjoy activities in both residential and commercial spaces. Eco-friendly and Safety - Made up of 100% environmentally friendly polyurethane foam, making it great for any location in the home or studio, it's safe for adults, kids. There may be a slight temporary smell when opened, which is normal and harmless and go away soon. Colour: black Material: polyester fiber Size: 30 x 30 x 5cm Package Contents: 12 x Acoustic Foam 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.