NOT COMPATIBLE WITH FOOD SAVER SEALERS Use with a chamber vacuum sealer (not FoodSaver compatible) to safely package and store meats, cheeses, vegetables, and grains Chamber sealing locks in freshness, flavor and nutritional value while extending food storage time Durable 3 mil thickness keeps your product safe during storage and transportation BPA free time. Stronger, thicker seals eliminate product loss, freezer burn, and dehydration while providing extra protection during transport and handling. High-clarity transparent poly/nylon material makes product easily identifiable through the seal. Compatible with small and large vacuum chamber machines. Not intended for food Saver sealers.