The nutrifresh™ vacuum pump removes excess air from nutrifresh™ vacuum storage containers to create an airtight seal to improve the freshness of the food inside. nutrifresh™ containers can keep food fresh for up to three to five times longer when used with this vacuum pump. The removed excess air helps to reduce aerobic bacteria or fungi and prevents the evaporation of volatile components. Reduce the amount of times you have to buy food as the vacuum containers will preserve the contents, saving you money off your weekly shop. Made from BPA free plastic and dishwasher safe.