It’s our mission to provide the world with affordable options to keep drinks cold. With the addition of our new 40 oz Iron Flask Co-Pilot Tumbler, we’ve carefully updated the design Iron Flask enthusiasts love to meet our high standards for both quality and value. Each tumbler includes a straw lid for iced drinks and a flip lid for hot beverages. These cups are leakproof and keep your drink cold for 24 hours and hot for five – all at an affordable price point.

Leakproof tumblers are the definition of convenient. Use a straw for easy sipping without tilting or tipping the tumbler. This can be particularly useful while on the go, driving, or engaging in other activities where holding and tipping a tumbler might be impractical or inconvenient. On the other hand, if you prefer to sip hot beverages, the flip-lid is easy to swap in for the day.

Our 40 oz Iron Flask Co-Pilot Tumbler is an excellent value for a quality insulated travel tumbler. It's about half of what you can expect to pay for similar products from our competitors. We provide quality products at affordable prices without sacrificing the integrity of your sipping experience. Our Iron Flask tumblers are sweat-free, BPA-free, and made with double-walled stainless steel insulation. Each travel tumbler also features a built-in coaster and a screw-on insulated lid. The non-slip coating allows for easy handling, and the multiple lid options allow you to sip from a straw or a flip lid. Regular washes with help from our cleaning brush can help extend the longevity of the tumbler.

Stainless steel is known for its durability and resistance to rust, corrosion, and dents. A stainless steel tumbler can withstand daily use and is less likely to break or degrade over time than other materials like plastic or glass. Our tumblers are also excellent at retaining the temperature of your beverages. They can keep your drinks cold for extended periods, making them ideal for refreshing iced drinks or warm beverages.

Stainless steel tumblers are versatile and can be used for a wide range of beverages, including water, coffee, tea, smoothies, and more. They don’t retain flavors or odors, helping keep your drinks fresh and pure without lingering residue.

The environmental benefits of using a tumbler with a straw are also worth mentioning. Choosing a reusable tumbler over disposable cups or plastic bottles helps reduce waste and minimize environmental impact. This allows you to contribute to sustainability efforts by reducing the consumption of single-use plastics.

Unlike some plastics, stainless steel is a non-toxic material that does not leach harmful chemicals into your drinks. It is a safe and hygienic choice for storing beverages, ensuring your drinks remain free from contaminants. From tumblers to food jars and beyond, Iron Flask uses stainless steel technology to provide the ultimate tasting experience.