






💧 Hydrate like a boss—24 hours cold, 12 hours hot, zero compromises.
This 3.8L Iron Flask stainless steel water bottle features double-wall vacuum insulation to keep beverages cold for 24 hours and hot for 12 hours. It includes two leak-proof lids—a patent-pending straw lid with dual straws and a spout lid—crafted from durable, BPA-free 18/8 stainless steel with a powder-coated finish and laser-engraved branding. Ideal for sports, gym, travel, and everyday use, it combines large capacity with sleek, sweat-free design.







| ASIN | B09GKPWBWJ |
| Best Sellers Rank | 385,686 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 1,091 in Insulated Bottles |
| Brand | IRON °FLASK |
| Capacity | 3.63 kg |
| Colour | Day & Night |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,761) |
| Date First Available | 17 Sept. 2021 |
| Item Weight | 1.41 kg |
| Material | Stainless Steel |
| Model Number | IRO-FGS-A016-01-AF1US |
| Product Dimensions | 16.31 x 16.31 x 42.67 cm; 1.41 kg |
| Special Features | Durable |
H**?
Big Bottle, Big Impression!
This thing is seriously cool in my opinion! I got the 3.785L, it's huge! It keeps the water cold for a long time. The design is great, as is the quality. I love that it comes with two different lids! Really impressed overall.
S**A
A great quality water flask that’s true to size
Absolutely love this bottle! Nice & big, stores a lot of water helping me maintain my water goals and has a nice sleek design.
M**Y
Incredible Bottle
Amazing water bottle at this price. The bottle and both lids feel sturdy and well made using quality materials. Looks incredible too. A* 👏🏻
E**6
Best thermus flask I've ever bought
I absolutely love this flask. I've been using it daily for about a year now and can happily report no real wear and tear, no fade on the paint, it still holds temperature like day 1. I've had ice and water in there and the ice remained past 36 hours! It's very light when empty but obviously at 3.8 litres its got some weight when full. All round, a great product. I highly recommend.
A**S
Finished to an amazingly high standard.
I was incredibly impressed with this water bottle. The standard of manufacture really does deserve a mention because the attention to detail in every aspect of it is very high indeed. The handle is strong and sturdy but not overly so. The seals are excellent and the way the lid unscrews and clicks open when you pour is an amazing finishing touch. Very, very pleased with it and it has finally allowed me to go plastic-free for all my drinking water needs at work.
J**N
Good buy
Great big water barrel, good quality product
M**D
Big bottle
Big Strong Good quality Bit heavy Keeps the temperature hot for a while Doesn’t hold the temperature of the water that well wen half empty obviously Haven’t tested cold water yet Pretty good quite happy with it
W**E
Very good 128oz jug
Ordered 2 as they seemed value for money, very happy with my 1,my son did have a straw split after 2 day's, I drink a lot of water per day so this is brilliant, keeps it cold all day for me. I have had a little bit of trouble with sourcing a new straw (it comes with a spare), I have finally found a straw for it which is great. The lid option is better than having both on the same lid. The easy cleaning is helpful with my bad hands
M**İ
Gayet güzel bu fiyata çok mantıklı tavsiye ederim.
N**A
Termo borraccia molto funzionale anche se davvero ingombrante, e pesante (1 gallone circa 3,785 litri). Ideale per la famiglia che magari che fa attività all aperto tutti il giorno o per sportivi che hanno necessità di idratarsi continuamente. In dotazione due tappi: uno con cannuccia richiudibile e l altro con tappo a vite per poter versare i liquidi dove vogliamo.
D**D
I bought this for the specific purpose of having a solid reusable water jug for work, and after using it for a couple weeks now, I can say this thing is as solid as can be. I keep it my truck while working and has proven to be leak proof and durable. The drawback of it is that it is pretty heavy (stainless steel and full of water) so if you're looking for a more mobile, easy to carry for regular use I'd go with maybe a half gallon size. Personally I don't mind the weight of this at all because it sits in the middle of my truck while working. The gallon jug come with the open mouth lid that you can unscrew and drink from as well as a lid fitted with a straw and an extra straw. I use the straw lid because it's easier to pick up and drink while sitting in the truck as I get back in after a stop. Note, the straw isn't the easiest to use compared to a typical straw with it being long and in a gallon jug, but again it's perfect for me I don't mind. This is a perfect gallon jug for work that keeps my water cold all day. Put enough ice in it and it will keep the ice just fine and keep the water ice cold. At first I didn't put enough ice and it just melted. After using it a bunch of times now I added more ice and by the end of the day now there's still a big ice chunk in the jug.
A**L
Great value and product.
M**E
Bought this for my husband who farms and needed a larger thermos for ice and water. Pack this full of ice and you'll still have ice 3to4 days later! Good quality stainless thermos.
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