Includes several pieces of specialized Black Magic™ dense motorcycle seat base foam (not the commonly available lower density upholstery foam, which is not proper for the repair of a motorcycle seat). Contains a sheet of low-density cover foam. Simply cut away damaged foam and replace it with supplied foam. Perfect for the do-it-yourself applications. Sizing: Lower density foam measures approximately 2' x 1-1/2'. Black Magic™ foam blocks are 1" thick x 5" x 6".