Zojirushi: the world's best vacuum flask

The Zojirushi stainless steel vacuum flask is widely regarded as the best in the world. This beautifully contoured black flask is made of the highest quality 18/8 stainless steel and has a tight fitted durable flip-open lid with a solid safety lock. The lid is totally leak proof, while the one click safety lock prevents it opening by accident. The interior of the flask has a slick steel coating which prevents stains and condensation.

The stunning design of the flask is complemented by its quality feel, robust construction and excellent grip. The flip open lid is sculpted to allow direct drinking from the flask, which is also narrow enough to fit most car cup holders.

But aside from its brilliant design the Zojirushi is voted best in the world because of its amazing insulating properties. Independent reviews from tested.com found it kept coffee hot for 14 hours and water (with ice cubes) cold for 3 days! This is compared to about 10 hours hot and 2 days cold for a top rated Thermos brand.

This is the very best of Japanese engineering, specially imported into the UK by Oscar & Joy.


  • Capacity 16 oz. / 0.48 litre
  • Dimensions (W x D x H) 2-5/8 x 2-5/8 x 8-1/2 inches
  • Weight (lbs. oz.) 0.09
  • (official) Heat Retention* 189°F @ 1 hr. / 158°F @ 6 hrs.
  • (official) Cold Retention** 48°F @ 6 hrs.
  • Colour: Black
* Rating is based on water at a starting temperature of 203°F (95°C) at a room temperature of 68°F (20°C)
**Rating is based on water at a starting temperature of 40°F (4°C) at a room temperature of 68°F (20°C)


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