VacMaster 4-Mil Vacuum Packaging Chamber Pouches are perfect for your rough items. Our heavy-duty 4-mil pouch is designed to give an added layer of protection. Great at handling spiny, sharp, or boney items, the 4-mil material is thick enough to prevent bones poking through bags, tearing, or leaks. The toughness of the pouch is perfect for meat processing and will protect your food from freezer burn and dehydration. Our chamber pouches provide optimum freshness and a positive reliable seal, keeping food fresh up to five times longer. VacMaster pouches are transparent, allowing for easy identification of the product. The pouches work in conjunction with any chamber machine, but are intended for use with all VacMaster VP Series Chamber Machines. Pouches are not for use with suction or clamp style type vacuum sealers.