Soundproofing cushion for gymnasiums and piano rooms, sound-absorbing cotton, soundproofing mat for walls and floors, 3PCS (red) (blue)

This product has flame retardant properties and will self-extinguish when it is away from the fire. Waterproof and moisture-proof. Excellent insulation performance Environmental protection and health, sound insulation, sound absorption, noise reduction. High density flame retardant, long-lasting durability. Decorative wall, reusable Color: gray, black, white, yellow, red, blue, purple. Thickness: 5cm. Area: 9 square meters. Applicable scenes: drum room, piano room, bar, KTV, bedroom, hotel, opera house, kindergarten, theater, recording studio, conference room, concert hall, etc. Size: 1.5*2M. Material: sponge. Quantity: 3 pieces.