Features: Material: Environmentally friendly polyester fiber Colour: 5 colors (please refer to the page color table) Specification: Size: 30*26cm Seller Suggestion: Decoration please choose Thickness: 9mm (low sound absorption effect) Environmental protection, sound absorption, flame retardant, No odor, no toxicity, no formaldehyde Reusable, washable, non-deformed, non-shrinking, Containing flame-retardant materials, suitable for fire prevention in public places Widely Used: Great for processing sound on the walls of a studio or office. For recording studios, control rooms, home studios, home entertainment centers, home offices TV background wall, bedroom, living room, baby room, professional studio, rehearsal room, concert hall, podcast, church, home theater, vocal room, home studio, office, kennel, etc... Easy to shape and cut to size, changing them will not affect performance. Or use it on the ceiling, Door, or under the rug. Purchase Notes: Due to different batches, the product may have a slight color difference This product has a certain degree of flexibility,and the size will have an error of 1-2mm