Coffee on the go. Whether your first sip is in the kitchen, car or campsite, the 16 oz Coffee with Flex Sip; Lid from Hydro Flask lets you enjoy your favourite brew leak-free. So go ahead, start your day with confidence and know that your go-to beverage will be by your side. | Hydro Flask | Coffee Insulated Bottle with Flex Sip Lid, Green, Size E6-000.