Insulated ceramic for hot/cold drinks - vacuum-insulation + ceramic coating keeps flavors crisp and fresh. Edge-to-edge ceramic coating ensures liquids never touch metal for a pure, clean sip with zero metallic aftertaste. Double-walled, vacuum-insulated stainless-steel core keeps tea hot and refreshing water chilled for hours. Splash resistant sliding drink-through lid for easy sipping anywhere, anytime. Sleek non-slip silicone sleeve that’s easy to grip and soft on the hands. Fits into most standard car cup holders for an easy commute. Fill it up for all day hydration at your desk, a pool day, a picnic, or a road trip — with 20 oz, there's enough to go around! Pro tip: If you like your drinks piping hot, heat your tumbler with hot water first.