These 1 quart Mylar bags come in 3 layers (PET, aluminum foil, PE) to ensure maximum durability, including 1 quart 10 mil thickness, enhanced puncture resistance, keeps air, moisture and light in, preserves flavor and nutrients, and is ideal for transparent storage bags. Value pack 100 quart Mylar bags containing 100 oxygen absorbers, 5 clips and 112 labels. Whether you're storing snacks, organizing small items or protecting important items, our thermosealable Mylar bag resealable feature is perfect for reuse, and the user-friendly thermosealable bag ensures a safe seal every time. From the kitchen to the office, and everywhere in between, Mylar bags are proving to be a reliable, versatile companion to every aspect of your life. To maximize freshness and extend the shelf life of stored items, our large mylar bags are designed for heat sealing. We strongly recommend using a professional grade heat sealer instead of a smaller, less efficient model, and adjusting the sealer temperature for the best seal results. For food that needs to be stored for a long time, it is recommended to vacuum seal the bag first.