This handy sized vessel allows you to easily take your coffee, water, or other beverage with you wherever you go - and at a moment's notice. The double wall vacuum insulation keeps your hot liquids hot for up to 12 hours and your colds cold for up to 24 hours! Easy to wash with its professional grade stainless steel build. Please note that while the Hydro Flip Lid is not leakproof, it sure makes it easy to sip your favorite drink on the go.