Using this Hydro Flask is a breeze. First, open the lid and fill it with your favorite cold or hot drink. You can also add ice cubes easily through the wide opening. When you're ready to drink, just take a big gulp. For maintenance, wash it regularly with mild soap and warm water. Don't use abrasive cleaners as they might scratch the surface. Avoid dropping it to prevent dents. When not in use, keep it in a dry place. Enjoy your adventures with your trusty Hydro Flask!