Large felt, approximately 8-12mm thick. Size is approximately 1000mm x 1100mm. *Cut slightly larger to ensure sufficient material. Thickness and length may vary. Can be cut with scissors. Utilized for soundproofing and sound absorption, used in car deadening and cushioning materials. Cut to an easy-to-use size. If you need other sizes, please let us know in the comments section. The front and back sides have different colors: green and gray. As this is scrap material, dried glue or lint may be attached to the surface. Please understand the condition before purchasing. - Color: Dark Gray - Material: Soundproofing Fabric - Texture: Soft and Thick Thank you for viewing.