2300 ml airtight storage jars with a pushbutton lid for quick onehanded opening and closing, designed for kitchen organization and durable, longlasting use Builtin timer on the lid helps you record when items are stored, while an inner drying box holds desiccant to absorb moisture and keep contents fresh and dry Thick sealing ring provides 360degree airtight protection that remains effective even when inverted, guarding against dust, humid air, and bugs Stackable design with four sizes 450 ml, 1100 ml, 1700 ml, and 2300 ml for flexible arrangement and spacesaving vertical stacking to fit general household storage needs Use scenarios Pantry staples such as rice, pasta, flour, sugar, and snacks, kept organized and moisturecontrolled Coffee beans, tea leaves, and dry snacks stored with aroma and freshness preserved Bulk storage in kitchen cabinets or pantry, maximizing vertical space while keeping items orderly