The 21 oz. Hydro Flask insulated stainless - steel water bottle is a great choice. It can keep cold drinks icy and hot drinks piping for hours. This size fits nicely in your car cupholder, small shoulder bag, or backpack pocket. The double - wall vacuum insulation with TempShield™ technology eliminates condensation and maintains beverage temperature for up to 24 hours cold and 12 hours hot. Made of durable 18/8 Pro - Grade Stainless Steel, it's BPA - Free and Phthalate - Free. The proprietary powder coat gives it an easy - grip and sweat - free surface. It's compatible with the Standard Mouth Insulated Sport Cap and comes with a Lifetime Warranty. Model: S21SX407. It's a versatile, mid - sized option for all your hydration needs.
Using your Hydro Flask is super easy. Just unscrew the flex cap, fill it with your favorite cold or hot drink, and screw the cap back on. For cold drinks, you can add ice cubes to keep them extra chilled. When using it in your car, make sure it's placed securely in the cupholder. As for maintenance, wash it regularly with mild soap and warm water. Don't use abrasive cleaners as they can damage the powder - coat finish. If you're using the insulated sport cap, take it apart occasionally to clean all parts thoroughly. Keep it stored in a dry place when not in use. Enjoy your Hydro Flask for years with these simple steps.
