Removes air for freezer-burn protection.With the Ziploc Brand Vacuum Freezer System, you can protect your food against freezer burn, which means less wasted food and money. The Starter Kit includes specially designed vacuum bags and a simple, battery-free, air removal pump. The bags have a special one-way valve that allows air in the bags to be removed. They're great for freezing steak, hamburger, chicken and more. Starter Kit includes one Vacuum Sealer Pump and three quart-size Vacuum Freezer Bags. * The Ziploc Brand Zipper ensures and maintains a tight vacuum seal. * Specially developed multi-layered bags and one-way valve allow for the removal of air. * Bags are microwave safe when used as directed. See Microwave Instructions. * Pump is dishwasher safe. * Bags are resealable-you can remove part of the original contents and reseal the bag. * Bags are not intended for reuse. * For household use only.