The Mighty Safe Vacuum Vault™ is a stainless steel, food grade storage container with unique reusable vacuum seal technology. The Mighty Safe Vacuum Vault® proprietary seal technology locks in odors and seals in freshness for up to 15 days while keeping children and pets out. This amazing technology creates a vacuum seal that prohibits air from entering thus allowing food and herbs to stay fresh for weeks. Just put on the lid, press the pump 20-30 times and your edibles or herbs stay fresh. It's Mighty Safe.