Be prepared when your on the go with the KOVOT 30 Oz Double Walled Vacuum Insulated Tumbler. This premium quality steel 30 ounce drink flask, features double and wall vacuum insulated construction to keep liquids cold for up to 24 hours and warm for up to 12. This bottle is ideal for cold water, sports drinks, coffee, tea, hot chocolate, or soup that you want to maintain their temperature for longer. It is leak free and has corrosion resistant inner steel for longer lifetime.