Specification: Material: polyurethane Size: 30 x 30 x 2.5 cm Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2.Please allow slight dimension difference due to different manual measurement. Thank you for your understanding. Package included: 12 x Sound-absorbing cottons Professional acoustic control: our soundproof wall panels are designed for corners between walls and ceilings. They can also be installed horizontally on the wall. Facts have proved that soundproof wall panels can improve the sound quality, and can clearly obtain human voice and instrument recordings in a home recording studio. Therefore, you can mix music to a higher standard Good sound absorption characteristics: our bass trap can make your room quieter and help you concentrate. When you try to concentrate, there is nothing worse than being distracted from work and home affairs. By eliminating unnecessary echo and reverberation, the noise level of conversation, TV and other noise can be effectively reduced, thereby maximizing work efficiency and completing work quickly High-quality materials: our sound insulation panels are very lightweight and affordable. You may worry that our quality is lower than other sound insulation foam panels on the market. You can rest assured that our sound insulation foam panels are made of soft, professional sound insulation foam designed to absorb sound in various sound insulation situations. Moreover, the sound insulation foam is consistent in density and hardness, so the sound absorption will also be consistent Easy to install: our sound-absorbing foam is not high-density foam, so it is very light. You can easily place it where you need it by using staples, nails, screws, tacks or glue. No special tools or materials are required for installation Environmental protection materials: our sound-absorbing foam bricks are made of environmentally friendly polyurethane, which will not cause any harm to the human body. I