This 8oz Insulated Tumbler will be the mug you sip your morning coffee, and the cup you use when you're ready for an old fashioned or barrel-aged brew. The 18/8 stainless steel ensures that your beer or other tasty treat retains its own flavor and doesn't come away with any sort of metallic taste. The double-wall vacuum insulation keeps things hot or cold to the last drop. Comes with press-fit Simple Lid (NOT leak-proof). Keeps hot stuff hot for up to 2 hours and the iced stuff cold for 10.