Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.
🥤 Stay refreshed, stay ahead — sip smarter with Isosteel Duo!
The Isosteel Duo 9900DAT is a 0.75L double-walled vacuum flask crafted from food-safe 18/8 stainless steel, featuring advanced vacuum insulation that keeps beverages hot for up to 24 hours and cold for 48 hours. Designed for dual use, it includes two detachable screw-on cups and a leakproof screw cap with a QuickStop pouring system, all wrapped in a sleek matte titanium grey finish. Perfect for professionals who value style, convenience, and sharing on the go.
| ASIN | B073WC3VSN |
| Additional Features | Leakproof |
| Age Range Description | Adult |
| Best Sellers Rank | #861,096 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #6,129 in Insulated Bottles |
| Brand Name | Isosteel |
| Cap Type | Screw Cap |
| Capacity | 0.75 Liters |
| Color | Titanium Grey |
| Customer Reviews | 4.0 4.0 out of 5 stars (55) |
| Global Trade Identification Number | 04026862075631 |
| Included Components | Lid |
| Item Dimensions W x H | 3.03"W x 11.97"H |
| Item Height | 30.4 centimeters |
| Item Type Name | Isosteel Duo 9900DAT Top 0 75 Litre Stainless Steel Vacuum Flask, Titan/Grey, 8.2 x 7.7 x 30.4 cm |
| Item Weight | 562 Grams |
| Manufacturer | Isosteel |
| Material Type | Stainless Steel |
| Model Name | DUO Top Vakuum-Isolierflasche 0, 75 L Titan-Grau |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Coffee, Tea, Water |
| Theme | Space |
| Unit Count | 1.0 Count |
| With Lid | Yes |
P**B
Works as it should.
Very nice item. Pours well. Keeps liquids cold for a long time.
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.
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.
H**M
Hot water
Good choice to get hot water all the day
M**N
Like
Very nice
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 on Original 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.
C**R
Great quality and keeps my tea hot all day. 😊
Just love it!
C**R
Not impressed 😟
Doesn’t hold the heat as the advertisement says. I even “prime”the thermos with boiling water and let it sit all sealed up for some 20 minutes before use. Then i add my hot coffee (which I microwave before pouring inside). Each time within 3 hours I have lukewarm coffee, So, I’m not impressed.
Trustpilot
2 weeks ago
1 week ago