Hydro Flask Insulated Food Jars keep food fresh, no matter where your travels take you. Color LastThe proprietary powder coat from Hydro Flask is dishwasher safe, and your bottle stays slip-free and colorful, no matter where you take it. TempShieldThe unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.