20 OZ: Designed for hot drinks, Hydro Flask's insulated Wide Mouth water bottle with Flex Sip Lid is cupholder compatible and leakproof. This insulated, stainless steel bottle is ideal for coffee, tea or your favorite beverage, while keeping hot drinks hot and cold drinks cold. 24 HOURS COLD. 12 HOURS HOT: Double-wall vacuum insulation keeps drinks hot or cold for hours. The insulated bottle keeps beverages cold for 24 hours and hot up to 12. The TempShield insulation keeps the bottle cool to the touch. LEAKPROOF: Say goodbye to leaky water bottles. The Flex Sip Lid is leakproof when closed. Simply twist it shut and toss it into your bag without worry. Enjoy hot drinks, and rest easy knowing your drink stays securely sealed all day. PURE TASTE: Durable pro-grade stainless steel ensures pure taste and no leftover flavor transfer. So, today's mocha won't have any taste of yesterday's morning brew. FITS CUPHOLDERS: The cupholder-friendly design means your bottle fits seamlessly in most cupholders. Designed for seamless cupholder cohabitation, it's right at home on the open road, on the sidelines, in a pack or wherever you need to set your sips. DISHWASHER SAFE: Easy to use and easy to clean, just toss the lid and bottles into the dishwasher. Designed to keep bright color, being dishwasher safe means your favorite Hydro Flask is always at-the-ready.