Features: Keeps beverages cold up to 24 hours Keeps beverages hot up to 12 hours Durable stainless-steel design TempShield(R) double-wall vacuum insulation Leakproof when closed Fits most cupholders Pure taste, no flavor transfer Wide mouth opening is ice-cube friendly Dishwasher safe BPA-free Flex Straw Cap not intended for use with hot liquids Not for use on a stove, in a microwave or freezer Bottle fits all Wide Mouth caps and lids