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Keep drinks hot or cold for 27 hours.

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Product code: 15903543 / 321787

Keep drinks hot or cold for 27 hours.

For serious outdoor trips, you need a flask that is going to keep your drink exactly how you want it.

The Master Vacuum Bottle is the answer, with an exceptional QuadVac™ insulation system that keeps drinks hot or cold for 27 hours. Iced drinks will stay cold for 100.

Made from rust proof and BPA-free 1.0mm 18/8 stainless steel, the bottle is very strong, and the steel-lined pour through stopper means that plastic will not be involved in the stirring or making of your drink.

The cup itself also does a great job in its insulation, keeping your drink hot or cold for twenty minutes. 
  • 1.0mm 18/8 stainless steel – the strongest you’ll find by far. Rust-proof + naturally BPA-free.
  • Steel-lined pour through stopper – no plastic contact for contents.
  • Vacuum insulated 18/8 stainless steel cup keeps drinks hot 20 minutes.
  • Lifetime Guarantee.
  • Dishwasher safe
  • 750ml
  • 8.8 x 8.8 x 30cm
  • 889g
Approach, Backpacking, Casual, Commuting, Everyday Use, Travel, Trekking, Walking, Weekend

Important Christmas Information: Due to the large number of orders placed at this time of year, we cannot guarantee that home delivery orders placed after 4pm on December 20th will arrive before Christmas.

However Click & Collect from your local store will still be available right up to Christmas Eve. Please check your local stores opening hours before making a trip to store.

Delivery and collection options

Ratings & Reviews

Overall Rating

4.80 out of 5
5 reviews
Write a review
4.80 out of 5


Guys, recommended to anyone.
Hot drinks 36 hours later, in Iceland.
What else is there to say..........

4.80 out of 5

Tough and hot

Seems solidly built as advertised. Drinks definitely stay hot better than any of my other flasks, I haven't tested it for the full 27hrs hot advertised yet, but perfect for making in the morning and drinking in the evening.

4.80 out of 5


The flask to beat all flasks .
Its like an artillery shell.
Does what it says on the tin.
Absolutely amazing

4.80 out of 5


Built to last a life time
Works perfect very happy with this
Would recommend to all

4.80 out of 5

Stanley Master Vacuum Bottle

10 out of 10. this is the best flask I have ever had. Holds hot water for what it says. I tested it for 24 hrs hot water indoors and 12 hrs outdoors in Nov.

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