Various sizes to meet your different needs:25*500cm.Suitable for all kinds of vacuum packaging machines of different brands.[Customer Service] We offer comprehensive advice.If you have any questions about the use of food vacuum bags products, please feel free to contact us by email to better serve you. Food Vacuum Bag for vacuum machine - Retain the freshness, original flavor and nutritional value of food products and prevent air from entering.Food vacuum bags allow you to store and consume fresh food for longer periods.They protect food from external factors such as air, humidity, mold and insects.Air is sucked out of BPA-free bags, helping to slow spoilage and moisture of foods, thus preserving their original flavor and nutritional value. Chief's partner Ideal for use with the sous vide cooker.This is because they eliminate the air around the food and prevent it from floating during the cooking process.Compared with ordinary bags, vacuum bags can prevent the nutrition of food from getting lost in water, ensuring food is heated well, and locking in nutrition and deliciousness while cooking. Food safety Free from BPA, phthalates and other plasticizers.The food vacuum roller seals are made of food grade nylon and polyethylene.They block moisture and oxygen, retain nutrients in food and help people to eat freshly prepared foods. Resistant to low temperatures Food vacuum bag can withstand temperatures down to -45C and allows large quantities of food to be easily placed in the refrigerator.