Our 50lb 4 Mil extra heavy-duty ice bags are up to the task for your ice storage needs. Perfect for the drive thru beverage seller who also supplies bagged ice to their patrons. 18 x 36 50# extra strength heavy gauge Ice Bags and made of a low-density polyethylene film with freezer-grade resins which gives it a longer life span than your average ice bag. Bait & tackle stores and sport fishing charters use these to keep both the freshly caught fish on ice and the beverages nice and cold. 18 x 36 .004 Xtra heavy-duty ice bags retain their flexibility at low temperatures to reduce breakage and keep your ice secure!