Features: Made of selected fibre material retardant & breathable & environment-friendly & safe harmless to human body. Due to high density material it can provide great sound absorption performance and accommodate to high frequency ranges reducing noise and helping produce professional and high-quality recordings. size of each panel is 30*30*5cm which can be easily cut and DIY to meet your requirements. Just install them wherever you like. Come with 12 pieces and there are four optional colors for meeting different requirements. You can collocate free due to aesthetic appearance. A great solution for reducing and absorbing unnecessary noise echo and reverberation in a office bedroom recording studio broadcast booth gaming room or podcast room etc. Specifications: Quantity: 12Pcs Material: Fibre Color: Red / Black / Blue / Grey (Optional) Item Size: Approx. 30*30*5cm / 11.81*11.81*1.97in Package Size: Approx. 33*33*9cm / 12.99*12.99*3.54in Package Weight: Approx. 660g / 23.28oz Packing List: 12 * Panel Note: product is shipped after compression and it takes some time to recover rebound before use.