The elliptical design elevates these storage jars beyond simple kitchen accessories. They have been created with Robert Welch's original design philosophy of form and function clearly in mind. The jars are made from fully food safe, shatterproof Eastman Tritan and stack neatly on top of each other to save space on kitchen worktops or in a cupboard, larder or pantry. The airtight silicone seal keeps food fresh.