The Hydro Flask Kids Wide Mouth Flex Straw & Boot is a drink vessel for hydrating the young crowd. Designed for your pint sized kids, but the same TempShield, double wall vacuum insulation as the adult bottles. This means their drink stays cold or hot for hours, so you can send them to day care, school, or trips to the playground. The included boot protects the bottle from noise landings on the table, plus provides grip when they're in a hurry to get back out there. The easy Straw Cap is a simple flip and sip so they can run off for more fun.