This tumbler keeps hot drinks hot or cold drinks cold for incredibly long periods, while withstanding the wear and tear of an active lifestyle. A vacuum cavity between the thick double-walls of 18/8 stainless steel insulates the contents and keeps the outside comfortable to the touch, no matter how hot or cold the liquid inside may be. This also prevents condensation from forming on the sides, so a cold drink won’t mar a table finish if set down without a coaster.
Each is sealed with a thick O-ring inside the lid to resist leaks. Magnets hold the slider firmly in the open or closed position, so beverages flow easily when you want them to and won't slosh out when you don't. When it's time to wash the tumbler, the slider can be completely removed for thorough cleaning.
Unlike many vacuum-sealed containers, this tumbler is dishwasher safe, and the colored versions have durable powder-coat finishes that won't chip or fade.