BEST WATER BOTTLE: Your favorite insulated 32 oz Hydro Flask bottle with a cupholder-compatible design. Drinks stay cold for 24 hours, and the Flex Chug Cap makes it easy to stay hydrated. Designed for seamless cupholder fit, it's right at home on the open road. FITS CUPHOLDERS: The cupholder-friendly design means your bottle fits seamlessly in most cupholders. Designed for seamless cupholder fit, it's right at home on the open road, on the sidelines, in a pack or wherever you need to set your sips. LEAKPROOF: Say goodbye to leaky water bottles. The Flex Chug Cap is leakproof when closed. Toss it into your bag without worry. Wide Mouth opening fits ice cubes, and Narrow Chug drinking spout provides for a convenient, controlled sip. Flex Chug Cap not intended for use with hot liquids. 24 HOURS COLD: Double-wall vacuum insulation keeps drinks hot or cold for hours. The insulated water bottle keeps beverages cold for 24 hours. The TempShield insulation keeps drinks cold all day.