Is this the perfect iced coffee cup? I put my cold brew in the Ninja Sip Perfect travel cup, and it kept it cool all day

Ninja Perfect Sip and iced coffee — (Image credit: Future / Camilla Sharman)

Thanks to Ninja, I can now enjoy my morning caffeine fix in a heatwave without sipping a scalding cup of coffee. Having previously tested Ninja’s Sip Perfect coffee mug, designed to keep drinks at the perfect drinkable temperature, I had an ingenious idea. If it can keep my coffee hot, surely it can keep it cold.

I had high hopes that Ninja’s new travel mug, launched at the end of 2024, would keep my iced latte at the ideal temperature without it turning lukewarm. So, I grabbed my kitchen thermometer and put it to the test.

The chill factor

I started by making an iced latte and then poured it into the Ninja Sip Perfect, which holds 16oz of fluid. I then measured the temperature of the drink using my ThermoWorks One thermometer, and continued to do so every 30 minutes for a total of three hours. By the end of my experiment, I really needed that latte!

Swipe to scroll horizontally

Ninja Sip Perfect: Temperature change in beverage
Time (minutes)	Temperature °C	Temperature °F
On making	10	50
30	9.5	49.1
60	10.3	50.54
90	10.4	50.72
120	10.6	51.08
180	11	51.8
240	11.8	53.24

I was impressed with the results. Over the three hours, the temperature rose by only 3.24°F (1.8°C), with the largest increase of 1.42°F (0.8°C) occurring during the final 30 minutes.

And when tasting the iced drink, it was still incredibly chilled, as I was after having my first few sips.

Ninja Sip Perfect travel mug in a cup holder in a car — (Image credit: Ninja)

What I love so much about Ninja’s Sip Perfect is that it makes it possible to enjoy an iced coffee on the go. Take it on a car journey, pop it into your rucksack, or, like me, just enjoy it at your desk. What’s more, you can save a dollar or two on takeout coffees. Now, that is refreshing.

You might also be interested in how to create the best DIY iced coffee and save on coffee house prices.

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Camilla is the Homes Staff Writer and covers everything to do with homes and gardens. She has a wealth of editorial experience, mounting over 30 years, and covers news and features, tests products for reviews and compiles buying guides.

Her work has appeared in business and consumer titles, including Ideal Home, Real Homes, House Beautiful, Homebuilding & Renovation, and Kitchen & Bathroom Business. She’s even appeared on the cover of Your Home, writing about her own house renovation.

Although she’s obsessed with decorating her home, she also enjoys baking and trying out the latest kitchen appliances. But when she’s not inside, you’ll find her pottering about in her yard, tending to her vegetable patch or taking in her prized hydrangeas.

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