Double-Wall Thermo Glasses By Ozeri

I  have a set of double-wall thermo shot glasses that also can be used for espressos and was looking for a larger capacity glass made from the same component, borosilicate glass.  This set by Ozeri came with two 12 fl oz glasses but, they also sell a set of four.


If you are like me you may be wondering, “What the heck is Borosilicate?”. This I did look up and into because I like to go through life learning something new every day.

Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (~3 × 10’6 K’1 at 20 °C), making them resistant to thermal shock, more so than any other common glass. Such glass is less subject to thermal stress and is commonly used for the construction of reagent bottles.

What that means in a nutshell? Works great with hot liquids and you won’t burn your fingers plus, it expands with the heat (as a lot of items do in life when it comes to heat) therefore, less chance of shattering (thermal shock).

You may think these are made from plastic but, I can assure you, they are most notably not.  On that note you need to remember that these are glass too and not plastic so, be mindful of how you place them down.


With the rounded shape and contoured middle it is easy to hold and feels comfortable in my grip vice straight lined. Have been having fun testing various flavors of beverages out ~ pictured is Vietnamese (nice buttery flavor) with an ice cold glass of water with cranberries; also pictured is a glass of chilled white wine.


While coffee does get cooled off notably quicker than when in a ceramic mug the exterior stays cool to the touch throughout.  With cold beverages they stay icy longer than normal with zero amounts of condensation on the exterior; no worries about slipping.


Very easy to clean and dry. I cannot attest to them being dishwasher safe as I hand wash everything in my house.

As for the company etching on the bottom, it doesn’t bother me.  Much better than a sticker that leaves behind a residue besides, how many things do you wear through the day that have company logos on them people? Hope that puts it in perspective.

Disclosure:  I received these Serafino glasses directly from Moderna Housewares LLC however; this in no way influenced my review but, I chose to write this review and was under no obligation to do so. I only write honest reviews regardless of whether I purchased a product at full price, at a discount, or received it free.

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