Introducing the Smart Jumbo Tumblers by SmartFlask! These innovative tumblers blend the best features of travel mugs and traditional tumblers, offering a generous 1L capacity. Equipped with a handle, lid, and straw, they are crafted from durable stainless steel. Whether you want to keep your drinks hot or cold, these tumblers maintain the perfect temperature for 10-12 hours. Ideal for your morning coffee on the commute or staying hydrated on a hike in Australia, SmartFlask's Smart Jumbo Tumblers have you covered.