Caring for Your Hydro Flask

Hydro Flask bottles come with a one hundred year or a single lifetime warranty, whichever comes first!

By following a few simple maintenance steps, you can increase the longevity of your flask and ensure that every sip you take from your Hydro Flask in the coming years is just as clean and pure as the first.


Before Initial Use:

Hand wash your flask and cap with hot, soapy water. Rinse the flask as well as the cap, and it is ready to be filled for hydrating!


You Cannot:

  1. Put your flask through the dishwasher: The dishwasher can get hot enough to affect the insulation property of the flask as well as discolor the powder coat.
  2. Put your Hydro Flask in the freezer: Due to the double wall vacuum insulation, the water inside will be protected from the temperature inside the freezer and won’t freeze. If you want ice cold water, put some ice cubes inside your flask and notice how long it takes them to melt!
  3. Put your flask on the stove: Due to the double wall vacuum insulating property of the flask, outside temperature will not change the inside beverage temperature. If you put your flask on any sort of stove or heat source, the heat will damage the outside of the flask.

You Can:

  1. Wash your flask with a bottle brush: You can find a perfect bottle brush in the baby section of the grocery store. Use the bottle brush as frequently as possible.
  2. Use baking soda and vinegar:  You can use 3 tablespoons baking soda and ½ cup of vinegar to clean your flask. The flasks are made from 18/8 food grade stainless steel, so the abrasive baking soda will not damage the inside of the flask and will not retain the vinegar taste or smell.
  3. Wash your caps in the dishwasher: All Hydro Flask caps are top-rack dishwasher safe. The cap may last longer if it is hand washed, but if it needs to be deep cleaned, the dishwasher is okay once in a while.