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Free shipping on everything·10% off your first order·No account needed · Buy 2, save 10% · 3+, save 15%

Deal.ai › Store › Home & Kitchen › Kitchen & Dining
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Stainless Steel Insulated Vacuum Flask

Stainless Steel Insulated Vacuum Flask

Sold and shipped by Deal.ai

$20.99Free shipping

Buy 2, save 10% · 3+, save 15%

Extra 10% off your first order

Color: Wine red
Style: 300ml

Arrives about Nov 21 – Dec 1, from a warehouse in China

1

30-day full refund: if you're not happy with it for any reason, or it never arrives, tell us within 30 days and we refund you in full. Shipping and refunds

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Price facts

  • Last seen at $20.99 at Deal.ai on Nov 12.

Our take on the Stainless Steel Insulated Vacuum Flask

A slim, straight-sided vacuum flask with a 304 stainless steel interior and a 201 stainless steel shell, sold in 300ml and 380ml capacities. The screw-on lid and double-wall vacuum construction keep drinks hot or cold for 12 to 24 hours, which is the standard claim for flasks in this class. The business-style cylindrical body with rose-gold-toned bands at the base and neck gives it a dressier look than plain office tumblers. It suits desk workers, commuters and students who want a small, leak-resistant bottle for coffee or tea rather than a large hiking flask.

Best forOffice and desk useShort commutes and daily carryCoffee or tea drinkers who want small portionsGifting, thanks to the metallic finish
Pros
  • 304 food-grade stainless steel interior
  • Double-wall vacuum insulation rated 12 to 24 hours
  • Compact 300ml and 380ml sizes fit bags and cup holders
  • Screw-on lid seals for transport
  • Slim straight body with decorative rose-gold-toned bands
Cons
  • Small capacity; not enough for a full day of water
  • 201 stainless exterior is less corrosion-resistant than 304
  • Hand washing is safer for the finish and the vacuum seal
  • No carry handle, strap or cup lid

About the Stainless Steel Insulated Vacuum Flask

This is a stainless steel vacuum flask with a straight, cylindrical body and a screw-on lid. It has a metallic finish and rose-gold-toned bands around the base and the neck.

The inner layer is 304 stainless steel and the outer layer is 201 stainless steel. Insulation lasts 12 to 24 hours.

Material
Inner: 304 stainless steel; outer: 201 stainless steel
Style
Straight cup, business
Capacity
380 ml or 300 ml
Insulation
12 to 24 hours
Lid
Screw-on

Questions and answers

How long does it keep drinks hot?
The maker rates insulation at 12 to 24 hours. Real-world performance depends on fill level and room temperature; preheating with hot water improves hot retention.
Is it dishwasher safe?
The listing does not say so. Hand washing with mild soap protects the metallic finish and the vacuum seal.
What is the difference between the 300ml and 380ml sizes?
Only capacity. Both use the same straight-body design and screw-on lid, so pick the smaller one for pockets and cup holders and the larger one for a fuller coffee.
Can it hold carbonated drinks?
It can, but pressure builds inside a sealed flask. Open the lid slowly and avoid shaking it first.
What is the interior made of?
The inside is 304 stainless steel, the grade commonly used for food contact. The outer shell is 201 stainless steel.
Where is the Stainless Steel Insulated Vacuum Flask cheapest?
At Deal.ai, for $20.99, as of our latest check.

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