The Prepara Evak Compact - Medium container uses patented twin-valve technology to keep food fresh by expelling air for a secure, airtight seal. Perfect for pantry staples like grains, snacks, and baking ingredients, its space-saving design fits neatly in cabinets or on countertops. Made from high-quality borosilicate glass and stainless steel, with no harsh plastics, it ensures freshness and durability.