Poly bags are a food safe product (USDA and FDA approved) and generally are very compact for storage. They can be supplied to you individually boxed or on dispensing rolls.
Poly materials are available in a wide range of sizes and depending on your requirements, can be produced in very thin to very thick gauges. The gauge you need can best be calculated once the weight of your product and utility are determined.
Poly bags can have zip locks, anti-static and anti-skid properties. They can even have handles. These products are manufactured domestically as well as imported from Asia and India.