Absolute C3GR 3-Feet Long/4-Feet Wide Grey Carpet for Speaker Sub Box Carpet rv Truck Car Trunk Laner 3-Feet Long/4-Feet Wide Grey Carpet for Speaker Extremely durable stands up to heavy use High resistance to gas, oil, and salt Extremely durable; stands up to heavy use? Easy to cut, fit, and mold to desired shape or size Solution dyed polypropylene for good colorfastness and UV protection Backed with a thin layer of latex