WORKS WITH FOODSAVER AND ZIPLOC SYSTEMS These bags are compatible with other various brands heatseal vacuum systems HEAVY DUTY TWOPLY MATERIAL 30 mil thickness FDA food safe material and BPAfree EXTENDS FOOD STORAGE TIME Vacuum sealing locks in foods freshness flavor and nutritional value PRECUT TO 8 x 12 INCHES 100 quartsize bags are included KEEP NONFOOD ITEMS DRY TOO Keep valuables emergency supplies firearms and more dry until ready to use FoodSaver and Ziploc are the registered trademarks of Sunbeam Products Inc and SC Johnson and Son Inc respectively Use of the marks does not imply any affiliation with or endorsement by the mark owners 100 vacuumsealer bags keep food fresh up to 5 times longer Made of 2ply 3mil nylon with a layer of polyethylene mesh For use with Westonbrand sealers and externalclamp vacuum sealers Freezer and microwavesafe can be boiled in water for thawing Measures 8 by 12 inches each