Bonsenkitchen vacuum food sealer roll bags are Bpa-free and safe for microwaving, freezing, boiling, washing, reusing, and dishwashing. They re perfect for sous vide cooking, withstanding temps up to 230degree(s)F/110degree(s)C. Made from commercial-grade material with deeper air passages, they ensure a better, airtight seal to retain moisture and prevent freezer burn. Compatible with all major vacuum sealers, the rolls allow you to make custom-size bags in seconds. Featuring one side with a recessed groove and the other glossy and transparent, the 4 mil bags are easy to cut and seal. Embossed air-removal channels help maintain maximum freshness. These food-grade Pa+Pe vacuum bags preserve food up to five times longer than zipper bags, saving you time and money when storing leftovers, meal prepping, or freezing bulk items.