Acoustic panels with self-adhesive design. When you receive the acoustic foam tiles, just stick them on. Wide application - acoustic treatment for many occasions, not only real-time sound treatment on studio and office walls, but also for recording studios, home studios, and wherever you need it. Soundproofing panels are versatile and can be used in professional studios, rehearsal rooms, concerts, podcasts, churches, home theaters, vocal booths, home studios, offices, private men's rooms and dog kennels, miscellaneous, etc. By using the absorption panel to eliminate unnecessary sounds, other sounds can be made clearer. Can eliminate indoor reverberation // standing waves / sound and room sound. Made of polyester fiber material, which is environmentally friendly and harmless, safe to touch, safe for adults, children and pets. You can use it with. Size: 15 cm Material: Polyester Color: black Package contents: 12 x Acoustic panels. Only the above package content, others are not included. Note: Light and different displays may cause the color of the item to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.