Coffee on-the-go Whether your first sip is in the kitchen, in the car or on the campsite, the 16 oz (473 ml) Coffee with Flex Sip™ Lid lets you enjoy your favourite brew leak-free. So go ahead, start your day with confidence and know that your favourite beverage will be by your side. Reusable to help reduce plastic and other single-use consumption. Hydro Flask have a Parks For All program. This is where they support nonprofit organizations focused on building, maintaining, restoring, and providing more equitable access to parks.