Heavy-duty 4 mil thick material provides a superior pouch for optimum freshness and reliable seal</br>Keeps food fresh up to 5 times longer; eliminates freezer burn and dehydration</br>Pouches can be frozen?? refrigerated?? microwaved?? boiled?? or cooked sous vide</br>Nylon/Poly construction for high puncture and abrasion resistance</br>BPA-Free and FDA approved; compatible with chamber vacuum sealers</br></br>Product Description</br></br>Built to last?? the VacMaster 4-Mil Vacuum Packaging Chamber Pouches are perfect