Unlike normal carboys, they have a wide mouth which allows you to reach all the way inside, making adding or removing ingredients and cleaning much easier. Stick your whole arm inside the vessel to reach all of the surface area with a cleaning cloth, ensuring bacteria has no place to hide. The screw top ensures that the cap stays on throughout fermentation and won't slip out like a foamy bung! What's more, a handy carrying handle make transporting the jar a breeze! Capacity: 4.75 US Gallon Max Capacity (4.25 Gallon to top line before bottle curves) Material: Glass Dimensions: 16.25"H x 10.5"W