The wood-like cosmic tumbler is a perfect everyday tumbler you should have in your arsenal. This 20-oz. tumbler's outer and inner is made of stainless steel with a double-walled construction that helps in insulating your cold and hot drinks. Even better, it can keep your hot or cold drinks maintain their temperature for up to 6 hours with its vacuum insulation technology. Do not worry about spilling your favorite beverage with the bottle's snap-on spill-resistant lid that has a rubber gasket.