The Iron Flask 24 oz Classic Tumbler is the deskmate that won’t talk your ear off about the game or their kitchen remodel. This sweat-proof insulated tumbler is the perfect size to take with you anywhere while keeping your beverages cold for 16 hours or hot for 4 hours (way longer than you can keep yourself from sipping on them). We included two stainless steel straws and two plastic straws as well as straw cleaning brushes, so you can choose how to sip on your drink and always be sure that your straws are spotless.