AutoGo Sound Absorbing Material, Soundproofing Material 30cm x 30cm x 0.9cm, Reddish Brown, N=62 sheets Thank you for your interest in the product. Please read the following and await your bid. Brand/Manufacturer: AutoGo Retail Price: 1860 yen / 6 sheets (Amazon) [Product Condition] Used for about a month, then peeled off and stored, so it's like new. There are no adhesive remnants on the back from the double-sided tape used to attach it. [Product Description] ・AutoGo sound absorbing material is made of 230kg/m3 density polyester fiber, which combines sound insulation and sound absorption effects, and is a high-density, environmentally friendly material. It effectively absorbs reverberation that occurs in the corners of rooms where sound tends to gather. AutoGo sound absorbing material can be used not only for echo prevention in recording studios, but also for noise prevention in general households. ・Because it uses durable polyester material, the sheets are less likely to sag due to vibrations from people walking, and can be used for a long time. It is a material that is not only sound-absorbing, but also flame-retardant and heat-insulating. (Quoted from Amazon)