🔥 Stay fueled, stay sharp — sip smarter with Duo 9900DAT!
The Duo 9900DAT is a 0.75-litre stainless steel vacuum flask featuring double-walled 18/8 stainless steel construction and advanced vacuum insulation technology. It keeps drinks hot for up to 24 hours and cold for up to 48 hours. Designed for convenience, it includes two screw-on cups for sharing and a screw-top lid that allows pouring without removal. Its compact Titan/Grey design is tailored for professionals on the go.
M**N
Like
Very nice
S**N
Keeps contents hot
I bought this .75 liter thermos so I could have multiple cups of tea without having to make each one fresh. Definitely works for that. A reviewer mentioned that it didn't keep their beverage hot. Not sure how long they had it in there. My experience has been that the tea has been burn-the-tongue hot down to the last pour. Side note: I also keep the outer lid on to conserve heat. One more thing: the threads can be a bit wonky, but with a little coaxing screw down tight.
M**M
It’s ok
It’s alright, I don’t like the finish or that the one cup is plastic but it’s the only one that I could find that has 2 cups so I kept it instead of returning it.
H**M
Hot water
Good choice to get hot water all the day
P**T
Amended from 5 star to 1 - keeps beverage hot, but gray finish is coming off. DON'T BUY THE GRAY!!!
Amended review: Edited to add that even though it does keep my tea very hot all day, the gray finish is chipping off on the bottom. Apparently, when I filled it last time, some water dribbled down the side and it sat in the damp area for about an hour. That is all it took to remove the grey finish on the bottom. Looks like it is going to continue to chip away and creep up the side of the container. Sad as this WAS a very nice looking flask.WOW- Just checked into returning it and the return window is exactly 30 days - now closed. It failed in 31 days - guess they know just how long the finish will stay onOriginal review: Just arrived this morning and did a temp test - excellent!!! Filled with just off boil 200f water and sealed. Checked temp 7 hours later and it was 180f . That's good enough for me. Love the classy look and double cup, which will allow me to offer a cup to share if that situation arises. Will add some tea tomorrow and take on its maiden voyage. Think I will sew a protective carrying bag for it to help save the lovely grey finish, which looks like it could scratch easily.
R**.
Isosteel awesome
I am very pleased with my Isosteel thermos, been using it for about 2 months now, excellent thermos for hot coffee.
P**B
Works as it should.
Very nice item. Pours well. Keeps liquids cold for a long time.
A**R
Great thermos
We love this thermos. Better than others we have had.
Trustpilot
1 week ago
2 days ago
