This Fender flask is super easy to use. Just unscrew the top and pour in your favorite drink. It's great for taking your drinks on the go or keeping them at your bar. When it comes to cleaning, simply wipe it with a damp cloth to keep it looking nice. Remember, since it's made of stainless steel and vegan leather, avoid using harsh chemicals as they might damage the leather. Also, don't over - tighten the cap to prevent any damage to the flask.