Unlike other soundproof foam panels. They effectively remove echoes, standing waves, and greatly enhance sound clarity. Perfect for sound treatment needs, the more panels you use, the better the overall effect. Experience the difference with our high-quality acoustic panels. self-adhesive acoustic panels are designed for effortless installation without tools. With their self-adhesive backing, they can be easily applied to walls, doors, , and ceilings. Cut them to size as needed without compromising performance. Suitable for settings, including professional studios, game rooms, video blogger setups, rehearsal rooms, concert , podcasting studios, schools, home theaters,offices, pet kennels,et. If you need to remove the soundproof panels, simply use a hairdryer to heat them and peel them off. It 't damage the wall, allowing you to easily change the panel's position. Convenient and hassle-free. Color: A:Black Material: Polyurethane Size:30x25.9x1cm Package Contents: 22 x Self-adhesive 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.