Best Cold/Hot container I've ever had!!
583310
Works Amazing at keeping my Cold H20  Cold...
lasts for 3-4 days cold in my truck.  in 80-100 degree heat!!
3749589
I've been using this lunch box every day and I love it! If you use ice packs, there's no need to refrigerate perishable foods. I just come to work and set the box on my desk all day. It keeps hot foods insulated well. Great size for packing large meals. The drink pouch is large enough to fit a 24oz bottle of water, but anything like an insulated water flask would be too big. I don't use the pouch.
419179
Best water container ever.  Holds ice for 24 hours.  Makes a great gift for nursing moms or anyone who wants cold cold water to drink.

My water consumption has doubled since this purchase.
1257650
I scoured Amazon for hours looking for the perfect freeze-able sandwich container. Most of the other stuff out there looked too bulky because they had slots for sides(which purportedly would leak out by some accounts, if you put an apple or something in there), or were just big and spacious for...  giant sandwiches? I'm not sure why there weren't more options like this. This container was perfect. Just the right size for a sandwich , but with an icy lid to keep that lettuce crunchy for hours! I did take a recommendation from the hundreds of comments i read of other products by placing a paper towel between the lid and the sammich to prevent soggy bread from the condensation. Also, it wasn't a bad price, when compared with similar, less optimal (due to reasons above) products.  I also bought one for my boyfriend and he is reporting yummier lunches and never forgets to plop his lid in the freezer the night before.
287826
Got mine a week ago as a gift (with the premium lid) and I love it! Keeps stuff cold forever, great color (royal blue, my favorite), super solid. I am a clumsy guy and I think I can probably drop this off a roof and it will hold up. Definitely buying one for my girlfriend.
4972042
This is likely the best-insulated product I have ever used in my life. I drink a ton of water, living in San Antonio, TX I carry ice water with me everywhere I go. Sadly, this usually results in my throwing out a cup of warm water at an early point in my errands when my drink gets cooked in the car or even becomes tepid in my bag. With my Releaf Canteen, ice will last unmelted for well over 24 hours, I just need to keep adding fresh water as I drink it. This canteen comes with two lids, one traditional canteen style and the other a flip straw lid. Both work well and are easily removed and replaced. The steel is super tough and I have no qualms about throwing it into my trunk, across the yard, or whatever I need to do or am too clumsy to relocate properly. Both my son and my boyfriend have tried to "borrow" it and I will likely be making a few more purchases soon.

I received this product at a discount for my honest and unbiased review, I am in no way obligated to provide only positive feedback. All of the opinions above are truly my own.

***UPDATE JULY 25, 2016*****
Still using this every day including a cross-country road trip and a camping trip LOVE this canteen
1646266
This water bottle is literally magic. I filled it with really hot water one day and left it in my office by accident. When I came back the next morning (more than 12 hours later), the water was still too hot to drink. Highly recommend this to anyone who enjoys their cold drinks really cold and their hot drinks really hot!
2900479
Amazing and sturdy container keeps food warm for an absurdly long time. Nothing beats the Thermos brand!
1360231
This is about the 12th Hydro Flask I have purchased and I wish I could give it 100 stars!  I live in Las Vegas and the keep cool feature has been tested...and tested...and works every time!

Best part about it (besides keeping cold drinks cold and hot drinks hot) is that there is not a metallic aftertaste.  Hands down the best container on the market and ice tried them all (or close to it!) One of the only gifts I've given where I still get "thank you" texts months later!!!
4517789
I rarely write reviews on products, but this one deserves it. I research items to the core and finally decided on this one due to the fact I was looking for a sturdy lunch box. Sturdiest thing I could find was a mini cooler. We have other IGLOO coolers that have performed well on trips, camps, etc., so when I found this one I wasn't hesitant on the reliability.

I have only had it for a couple of weeks, but it's been the perfect size for me without feeling like I'm about to go on a camp out at work and has enough room for what I take to eat throughout the day. In the picture I have two chicken chimichangas, banana, apple, orange, yougurt, handful of steak jerky, a handful of carrots in a rubber-maid, silverware and two ice packs (which I also bought on amazon and they've done well for keeping the food cold in this cooler throughout an 8-5 day: http://www.amazon.com/Fit-Fresh-Coolers-Lunch-Packs/dp/B003FO2B5U/ref=sr_1_1?ie=UTF8&qid=1422468764&sr=8-1&keywords=ice+packs&pebp=1422468772925&peasin=B003FO2B5U).

The only thing I don't like is it can be hard to open, but that's just a minor complaint. It's a good thing for if it does tip over the lid won't fly open like others do. The best way I have found to open it is to put your thumb on the IGLOO logo on the top side of the cooler and lift the very edge of the lid on the same side where your thumb is at (one hand) and it opens a lot easier.

Great product that I hope (and believe) will last!!
3700982
Awesome! Love that this Kanteen keeps things hot or cold for longer than any other container I have ever owned. 24 hours and counting!
2588112
Best hot/cold beverage container on the market. This is the fifth one we have purchased and we love them.
3317926
This is a great product for it's price. 24hrs hot and cold drinks no doubt! If ur a hot and cold beverages lover!? YOU SHOULD GET THIS THERMOS!!! ;) Tried a lot thermos in my life, but didn't thought that this even existed! I'm happy w/ my purchase, this is a MUST! ;)
3888771
This works amazing! Ice lasts in the container for 12 hours and keeps the drink very cold. Best thermos out there!!!
4803023
I absolutely love this water bottle! I use it every day. I really love cold water. I'm not someone who enjoys drinking luke warm water. I can leave this in the sun or my hot car for hours, sometimes overnight, and it still has ice in it! I enjoy the size because I don't have to constantly refill it. But the best part is there is no condensation left on the outside to make all my stuff in my bag get wet!

It definitely is a wide mouth and some people do have a problem with that. However they now have tops you can put on that have straws or smaller openings so you don't have that possibility of pouring cold water all over yourself. Although on a hot day, that sometimes feels great!
674272
I saw this in the store and made an impulse purchase, with no real indication. Well, I must say that this thing is amazing, and it FAR exceeds my expectations. I keeps my tea HOT and I mean HOT for hours upon hours. One specific example is I made hot tea, put the thermos in my car- went for a walk (1hr) opened it and burned my lip, so I closed it. Left it in my car and went to my sister's house for 4 hours. When I got back into the car I saw and and decided to try - it was the perfect temperature to drink (hot enough that you have to sip it)! It is Feb and I live in NYC so it was about 40F outside. Great product. Highly recommend.

*Keeps liquids hot for hours!
*Does not get hot itself for holding
*Very lightweight
*Spoon is awesome
*Wide enough that I can clean it with a sponge all the way to the bottom
2838500
I recently started making homemade ice cream and other frozen desserts at home and was looking for a reusable container. All the reviews for this one were  pretty positive, so I gave it a whirl and bought 3. I couldn't be happier with them! They are so well insulated that on a hot day, I packed one of them, filled with strawberry rhubarb sorbet, in our car and left it in there to check out a wedding venue, then to a bar for a couple drinks and an appetizer, then the longish journey to a friend's house for dinner. All in all, the sorbet was in the 90+ degree care for 2-3 hours and the sorbet was just as frozen as when I put it in there.