With double-wall vacuum insulation and one-inch of lid insulation, the Rambler One Gallon Jug is built to keep things ice-cold (or piping hot) for longer. It has the same durable 18/8 stainless steel construction as the rest of the Rambler series, which makes it damn near indestructible, with a hefty stainless steel handle to make hauling your one gallon jug easy.