●BPA-free, strong and tear-resistant: vacuum food bag is made of PA + PE, BPA-free, approx. 150 µM, with a 7-layer construction, extremely strong and tear-resistant prevents other sharp objects such as bones from puncturing the bag. FDA approved. ●8 rolls of vacuum film and 4 food manager stickers: 8 rolls of foil bags for vacuum sealer including (4) 20 cm x 300 cm and (4) 28 cm x 300 cm. You can cut the vacuum sealer bag as needed to perfectly match the length of the vacuum sealer bag to the size of the food, attach a time label, view a clear list of due food. ●Prevent air leakage: embossed dot design vacuum bag creates channels for ventilation during the vacuum sealing process, effectively isolates oxygen and moisture and the freshness, you the shelf life of food by 3-6 times longer. ●Versatile use: with a temperature range of -20 to 110 degrees Celsius, vacuum rollers offer optimal flexibility for various applications. It can be safely used in the microwave, cooking, refrigerator or sous vide cooking. ●Note: Our vacuum food bag is compatible with "clip-on" vacuum sealers, when using in the microwave, you need to cut out a small opening if you have any questions about their use. Please contact us.