The Iron Flask 32 oz Classic 2.0 Tumbler is the largest from the classic 2.0 fam. While holding enough liquid to last you a while its double-walled vacuum insulation keeps your drinks cold for 16 hours and hot for 4 hours with no exterior sweat. Despite its larger size it fits in most cup holders so it can accompany you wherever the day takes you. This 2.0 version of the classic tumbler is leak-proof and has a rubber bottom that doubles as a non-slip and noise-proof coaster. And it includes two different insulated lids; a splash-proof straw lid with two straws and a 100% leak-proof flip lid so you can choose the way you sip.Â