Double Walled Mug, 450ml, stainless steel. The rustic acacia wood lid and wire handle gives an artisanal feel to this collection of Cafe Culture double walled coffee mugs. Double-wall captures air to create a vacuum layer of thermal insulation. Keeps coffee hotter and longer than standard mugs, while the outside layer remains cool to the touch. The lid doubles as a coaster and the 450 ml capacity is perfectly designed to enjoy a cup of your favourite freshly ground coffeehouse blend.