At Iron Flask we design reusable, convenient, sustainable drinkware. Whether you’re home or out exploring, our modern curved tumbler is your must-have accessory for enjoying all your favorite drinks. Our Rover tumbler comes with a clear flip lid and two straws so you can choose how to sip on your drink. Pick between 16 oz, 24 oz or 32 oz. It’s your chance to stay hydrated and be nice to the earth.
Tumblers & Mugs
Rover Tumblers
If you’re planning a desert hike or a hot day at the beach and need a large, sleek stainless steel tumbler that can hold plenty of liquid and has an easy grip, then this is your tumbler!
About Iron Flask
Vacuum-Insulated Tumblers
Our tumblers are designed with double-walled vacuum insulation. This means your drinks will stay at the perfect temperature and the exterior of your tumbler will stay dry and never sweat. Keep your fav drinks cold for up to 20 hours and hot for up to five hours.
Stainless Steel Tumblers
Made with premium-grade stainless steel, our tumblers prevent flavor transfer and are built to last and perform like no other. We’ve also given our tumblers a powder-coated finish that makes them look not only amazing, but perpetually like new.
Tumbler Lids & Accessories
Our flip lids are made of BPA-free plastic and are 100% leak-proof, offering convenient, mess-free enjoyment of your favorite bev. And the BPA-free plastic straws offer more sippin’ options.
Tumbler Warranty
At Iron Flask we always offer a lifetime warranty against manufacturer defects and 100% satisfaction guarantee. Because we want you to be stoked about your purchase with us, and if you’re not, we’ll do something about it.
Thirsty? Don’t Wait
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One for Everyone
Iron Flask has become a favorite of many because of our strong, durable, and affordable double-wall vacuum insulated, stainless steel, reusable water bottles. Our Iron Flask is ...
The Ocean Thanks You
The Goodness of Your Vacuum Insulated Stainless Steel Water Bottle If you are the proud owner of an Iron Flask, thank you and congratulations, you are hydrating in style. Consid...