"The creators of Contigo aim to make life simple, so the thermal mugs they create are equipped with the patented SNAPSEAL® technology, which ensures 100% protection against liquid leakage. Lift the SNAPSEAL® button up to drink and push down to close the cup. The stainless steel vacuum-insulated cup with a double wall keeps the temperature of the drink as long as possible: Your drink will stay hot for up to 6 hours and cold for 12 hours.
Contigo's Byron cup has a capacity of 470ml and is sized to fit in most car cup holders.