set of 4 3cm Soundproofing Fast urethane foam sponge Sound absorbing material Cushioning material Cushioning material 25cm x 25cm Density

Ships from Japan ✅ [No need to worry about it losing its shape] We carefully pack it to prevent it from losing its shape as much as possible. You don't have to worry about the sponge being deformed and unusable when you open it. ✅ [No worries about unpleasant odors] There is almost no unpleasant odor that is common with other products. There is no such thing as being so smelly that you can't use it indoors after drying it for a day, so you can use it right away from the moment you receive it anywhere. ✅ [Efficient sound absorption with wavy structure] The wavy structure on the surface ensures a large sound absorption surface area. Effective against random incidence of sound. It effectively absorbs sound by attaching it to the wall of a car interior, home theater, piano room, music room, etc. for deadening purposes. ✅ [Wave-shaped structure efficiently absorbs shock] The unevenness of the wavy structure disperses shock and protects your valuables. As a shock protector for effector cases, camera cases, attache cases, and computer storage. As a vibration prevention material for aquariums and motorcycle rear boxes. As a home-made filtration filter for aquariums, and as a material to prevent dust from entering ventilation holes. Because it is a simple product, it can be used for a variety of purposes. ✅ [About sound absorption and sound insulation] Sound absorption is the absorption of sound reflections. By absorbing sound, you can hear the sound clearly. This product is most effective if the material is soft and uneven, such as a sponge. Sound insulation is the act of blocking sound so that it does not travel, such as the sound of a piano or stereo, from coming out. Don't let outside sounds in. The materials must be hard and heavy, such as sound insulation sheets, plasterboard, and lead. *Sound insulation is not possible with this product. ✅ [Specifications] Size: 25 x 25 cm Thickness: 3 cm Contents: 4 pieces Material: Urethane foam Features: Flame retardant Density: 26/m3 ✅ [Note] The package is packaged with corrugated layers, so it looks flat, but there are cuts and it separates into a corrugated shape. Upon arrival, please open and check the package.