Our 18" x 24" heavy-duty locking mail bag provides ideal security for transporting valuable materials. (Bottom size: 6-1/4" x 17".) The standard gold (pictured) and black bags are constructed of puncture-resistant shells of 1350 Denier basket-weave ballistic nylon. Other colors are in 1000 Denier nylon. Pop-up lock for maximum security, with two keys per each, choice of locks keyed alike, keyed differently or master-keyed. Sturdy molded plastic handles for carrying ease, armadillo trim and a pick-resistant, heavy-duty metal zipper. Includes a 3" x 5" card holder. One-color imprint charge: $35.00, but FREE for orders of 12 or more bags - include digital file one-mail to: firstname.lastname@example.org. Price breaks also apply to orders of mixed colors. (An additional fee of $.25 per bag applies on orders when less than 10 bags of any color choice is selected.) Production on bags is approximately 10 business days. Quick ship available on gold bags with no imprint.