Usage Tips:Design - Periodic groove structure enhances both functionality and aesthetics; With self-adhesive backing Crafted with premium open cell foam and unique groove structure, these acoustic absorption foam panels are excellent at diminishing room reverb, echo, standing waves, and noise. When applied to walls and ceilings, they are highly effective in cancelling sound reflections to improve the sound clarity in the space. Our sound proof foam wall panels are flame retardant, odorless and non-toxic. Their high density, durable, and high resilience design ensures long-lasting performance. Besides, these modern wave style foam tiles are perfect for interior wall and ceiling art decoration Our sound dampening foam panels are perfect for a wide range of acoustical treatments. Perfect for recording studios, home theaters, offices, music studios, gaming rooms, vocal booths, basement, streaming rooms, living room, bedroom, and more. They are an excellent choice for podcasters, YouTubers, and streamers to create a superior audio experience Our acoustic sound panels are soft and flexible. It's effortless to cut them to size using a knife. With a convenient self-adhesive backing, they are easy to mount Colour:grey/Black Material:polyester fiber Size:about 30 x 30 x 5cm Package Contents: 6 x Acoustic Panels(with adhesive) 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.