






💧 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 |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 6.3 Inches |
| Best Sellers Rank | 403,028 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 1,141 in Insulated Bottles |
| Brand | IRON °FLASK |
| Brand Name | IRON °FLASK |
| Cap Type | Straw Cap |
| Capacity | 3.63 kg |
| Colour | Day & Night |
| Customer Reviews | 4.7 out of 5 stars 1,769 Reviews |
| Global Trade Identification Number | 00810082481211 |
| Included Components | 2 leak-proof lids and a spout cap |
| Is Oven Safe | No |
| Is the item dishwasher safe? | No |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 16.3W x 42.7H centimetres |
| Item Type Name | flask |
| Item Weight | 3.1 Pounds |
| Manufacturer | IRON °FLASK |
| Material Type | Stainless Steel |
| Model Name | IRON °FLASK Sport-Wasserflasche |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Hot and Cold Drinks |
| Recommended uses for product | Hot and Cold Drinks |
| Special Features | Durable |
| Special feature | Durable |
| Theme | Sport |
| UPC | 810082481211 |
| Unit Count | 1.0 count |
| With Lid | Yes |
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.
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.
D**V
Best Water Bottle I Have Ever Bought!
Researched a lot before purchase and I did not expect the size and quality of the bottle that had arrived. The bottle is huge! One of the images had a vape liquid bottle on top to example the size of it. Easy to clean with the wide mouth on the bottle. The quality of the lid and the bottle itself is amazing, the colour is high quality with the etched design. Perfect for all day hydration and for taking it with you on a long hike etc. Will reccomend to anyone who wants the final boss of bottles!
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.
D**Y
Huge!!!!
This thing is huge!! Take nearly 4litres of water! Very nice looking as well, Very happy.
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
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* 👏🏻
M**İ
gayet güzel
Gayet güzel bu fiyata çok mantıklı tavsiye ederim.
N**A
Ottima qualità
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.
A**L
Great value and product.
Great value and product.
J**Y
Great
Great alternative to Yeti. It is designed the same way so it works great. Keeps my water ice cold for as long as possible. I liked the color options and several lid setups
M**E
Good quality thermos!
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.
Trustpilot
3 days ago
2 weeks ago