Insulated Glass

8 reviews view all

From $29.95 USD USD

The stylish borosilicate glass flask with leak-proof bamboo lid comes in a range of sizes to suit everyone’s beverage needs.

Compare Product Sizes
6 hours
4 hours


These sleek, chemical-free, double walled glass Fressko Flasks include Fressko’s 2-in-1 Infuser Filter, making them ideal for creating your favourite fruit-infused waters, steeping your special tea blend to perfection or simply enjoying your coffee in; all while you BREW AS YOU GO
The borosilicate glass is extra thick to increase durability and the insulation ensures your brew will stay hot or cold for hours.

Available in 3 sizes.



  • Reusable Water Bottle
  • Tea Infuser
  • Coffee Thermos Flask
  • Fruit Infuser and for Smoothies and Juices
  • Borosilicate Glass – Class A
  • Bamboo Lid with Hardened Silicone Inner
  • Food Grade Stainless Steel
  • RISE
    7cm (W) X 18.5cm (H)
    Weight: 465gm Opening: 5.5cm
  • TOUR
    7 cm (W) X 22.5 cm (H).
    Weight: 519 gm Opening: 5.5 cm
  • LIFT
    7 cm (W) X 24.5 cm (H)
    Weight: 580 gm Opening: 5.5 cm

How to use Fressko?

1. Remove lid.

2. Twist filter apart. Fill long component with loose leaf tea.

3. Pop filter into flask. Fill with boiling water.

4. Twist lid back on and allow to steep for 2-3 minutes.

1. Twist open the lid.

2. Remove the Infuser Filter.

3. Add beverage. Twist lid back on.

1. Twist open the lid.

2. Remove the Infuser Filter.

3. Twist apart the Filter. Add fruit. Pop short Infuser into the Flask.

4. Twist Lid back on. Allow to Infuse.

8 reviews for Insulated Glass

  1. Susan (verified owner)

    Looks stylish and sleek but it does not keep the tea neither hot or warm as I wanted after 3 hours.. Was expecting your product to have thermos like quality to keep my drink warm for at least 4 hours as said in the product info… Disappointed

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    • Fressko

      Hi Susan! Sorry to hear your tea did not stay warm – the flasks are all insulated and definitely can stay hot for the times indicated as much testing as been done but it is dependant on use which is why we say ‘up to 4 hours’ As each time the lid is removed or opened heat can escape. It also depends on the temperature of the water going into the flask. If the water was boiling to begin with and the lid on securely and not opened in that time and your tea was cold after 3 hours then there must be a fault and we encourage you to contact customer service to discuss. Thanks for your feedback! Fressko x

  2. Dhruv


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  3. Tom

    This infuser thing is great! Great for loose leaf tea! Have used it to hold my coffee too and it’s been great. I recommend!!!

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  4. Jess

    The size is great at half a litre. Perfect for iced tea when I’m out and it stays chilled while in a hot car.

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  5. Heba

    The most gorgeous flask! Love the quality and durability of Fressko products. I have literally bought over 10 of these as they make the best gift items. Just wonderful products. Highly recommend!

    1 out of 1 people found this helpful. Was this review helpful to you?
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3 weeks ago
3 weeks ago
(verified owner)
Superb product.
8 months ago
I got the black 12oz size !first time using it today .. Yes , it’s super stylish, matte black finished. I love that . Slip proof , spill proof are great as they advised . But when it comes to keeping the drinks hot for 3 hours ... it actually less then 3 hours . I think it started to loose the steam after an hour . Even tho I kept my lid locked . And it’s super pricey for only last for this short amount of time to keep your drink hot ...False advertising and giving customers wrong information and expectations..

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