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Revomax Vacuum Insulated Flask - 355ml / 12oz

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The Basics

  • 18hrs Hot // 36hrs Cold
  • Open and close in under 2 seconds with one-hand
  • 100% leak-proof
  • Unique gas exhaust valve regulates pressure release for carbonated drinks
  • 100% eco-friendly silicone seal
  • BPA-free, Phthalate-free plastic lid chassis
  • 18/8 Food grade stainless steel flask – no flavour staining
  • Double-walled stainless with a vacuum insulation barrier
  • Copper plated core for premium temperature reflection
  • Powder-coated matte finish on coloured flasks
  • Durable as heck, ideal for outdoor use
  • Stays secure when hanging from a carabiner
  • Sweat-free
  • Dishwasher safe – top shelf
  • Winner of the 2016 “iF DESIGN Award”
  • Lifetime Warranty


What makes the Revomax so awesome?

The Revomax 5355ml / 12oz leak-proof bottle is the perfect size for anyone and any activity. Designed to be both lightweight and secure, you can throw this spill-free bottle into your car, backpack, or purse without worrying about leaks and spills.

From your cup of coffee on the way to the office, to your water while you’re running errands, a spill-proof bottle is an essential part of your day. The Revomax 355ml/12oz insulated flask is designed to be your ideal travel companion, both at home and on the go.
The compact size makes this leak-proof, stainless bottle lightweight and easy to carry while remaining sturdy and reliable. Your beverages are always at the right temperature thanks to the insulated 12oz bottle. Hot drinks can stay warm for up to 18 hours, and cold beverages can last all day.

Our innovative seal prevents any spills or leaks, so you can throw your water bottle into your purse, gym bag, or briefcase without worrying. Whether you are going for a quick jog, heading out on your morning commute, or working around the house, your Revomax 355ml/12oz flask will keep you hydrated and satisfied.


Why choose a Revomax over other water bottles?

As I said above, I rarely exist without a drinking bottle by my side. I've used them all over the years, and was pretty skeptical that the Revomax would be any better when we got a sample... within half an hour of using it I had changed my tune. Literally the best open and close system I've ever used, simple, fast, yet so damn secure. Zero spills, strong as an Ox, I can drop this thing from the second story and I'd be more worried about damage to the concrete slab than my water bottle.

Super practical also for hot beverages, I've experimented with tea, coffee, the works... but the stand out is cold water. It really does stay ice cold for 36 hours+! 

"The simplicity is perfect if you have one hand already occupied like when driving, or experience challenges with grip strength.
Whether it's tiny hands still building their strength or elderly hands that have lived a full life, Revomax makes the simple task of drinking your favorite beverage a pleasure instead of a challenge."




  • Capacity: 355ml / 12oz

  • Weight: 272g / 9.6oz

  • Mouth Opening (outside diameter): 49.2mm / 1.94" 

  • Base Diameter: 74mm / 2.91"

  • Flask Height (w/o lid): 156mm / 6.14"

  • Flask Height (with lid): 204mm / 8.03"

  • Performance: 18hrs hot // 36hr cold

What's in the box?

  • The only water bottle you'll ever need



Revomax products are built to last. With proper use, your Revomax products should keep serving you for many years to come.

If your Revomax product should fail to function properly at any time, we will gladly repair or replace the parts or the whole product for free.

We genuinely want this to be the last flask you will ever own.

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