When it comes to kitchen storage, Fido jars are man's best friend. For safe, airtight storage of flour, coffee, grains, beans, rice, pasta, and all kinds of leftovers, the classic Fido jar can't be beat. The square shapes (the 4-liter & 5-liter sizes are round) save space in the cupboard and refrigerator; the locking, clamp lids and rubber gaskets ensure airtight storage.