Zipper vacuum bags have a unique top that lets you re-use your bags after the initial vacuum seal.Reusable and Easy Open: All bags are reusable, include a space to label the date/contents and are compatible with most major vacuum sealer brands. Each quart bag has an easy-open tear notch and zipper to open and close multiple times after the initial vacuum seal is broken.Versatile: Each bag has a pattern design that helps hold in moisture. These bags are up to the task - and all at a price that makes sense.For Optimal Results: Use with the LEM MaxVacA(R) heat bar sealers. Not compatible with chamber vacuum sealers. Features:8" x 12" (20.3 cm x 30.5 cm)Quart Size18 count or 100 countResealable zipper lockExclusive pattern design helps seal in moistureSturdy 3 mil thick, puncture-resistant plasticReusableIncluded space to label the date/contentsCompatible with most vacuum sealers (Not compatible with chamber vacuum sealers)Easy open tear notch