The Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation is a high-quality water bottle that is perfect for keeping your drinks cold or hot for hours. Made from durable stainless steel, this water bottle features a standard mouth opening and a flex cap for easy drinking and carrying. The double-wall vacuum insulation ensures that your beverages stay at the desired temperature, whether it's ice-cold water on a hot summer day or piping hot coffee on a chilly morning. Available in various sizes, this Hydro Flask water bottle is a must-have for staying hydrated on the go.