The Wheeler Engineering Delta Series AR-15 Maintenance Mat is perfect for any AR-15 lover, featuring a screen printed exploded view of an AR-15. The maintenance mat is made of a dark gray no-mar, padded neoprene that has a durable non-skid rubber backing to protect your firearm's finish. Excess oils and solvents are absorbed into the mat, keeping the surface clean and dry and protecting your workbench. Each mat is machine or hand washable with mild detergent and water. The mat rolls up easily to fit in your range box so you can use it on the shooting bench as well.