21 OZ. (621ML) STANDARD MOUTH WITH FLEX

This water bottle fits in cupholders and comes with a leak - proof flexible straw cap. It's super easy to fill and drink from. Just open it up, toss in some ice, and flip it to take a sip. The insulated stainless - steel construction keeps your drink cold for up to 24 hours.

Using this water bottle is a breeze. First, open the bottle and add ice or your favorite drink. Then close it. When you want to drink, just flip the cap and use the flexible straw. It's designed to fit in cupholders, so you can take it on the go. As for maintenance, clean it regularly with warm soapy water. Don't use abrasive cleaners as they might scratch the stainless - steel surface. Also, make sure the cap is tightly closed to keep it leak - proof and to maintain the cold temperature for as long as possible.