IRON °FLASK Camping & Hiking Hydration Flask with Straw, Wide Mouth Insulated Stainless Steel Sports Water Bottle - 64 oz Dark Rainbow

The Iron Flask does exactly as advertised. Keeps beverages cold for hours. I don't drink hot beverages(not a coffee/tea drinker). I love the choice of covers, when packing for later I use the cover with no drink opening when biking I use the straw opening and hiking I use the wider drink spout. The 3 tops are a bonus. The wider opening is a great design to insert approximately a 2 inch ball shape ice cube and make cleaning easy. I love all the sharp choice of colors that others don't offer.

I’m a longtime fan of Iron °Flask bottles—this 40 oz size is just the latest addition to my personal collection (yes, I rotate through several like they’re outfits). I’ve also bought dozens of these as gifts over the years, and they’re always a hit. Every single one I’ve owned still works perfectly, even the older ones. A few have some scrapes and bumps from being dropped (I’m clumsy—it happens), but they still keep my water ice cold all day and haven’t lost their seal or insulation. I love that it comes with three different lids so I can switch things up depending on whether I’m driving, walking, or just lounging. The quality is super consistent, and they’re easy to clean and carry. If you’re on the fence, just get it. I basically evangelize these to everyone I know and have yet to hear a single complaint.

I have had mine for almost 4 years now. It has been through a lot. I've taken it on road trips, camping trips, fishing trips, metal detecting trips, and most importantly everyday at work. This canteen is tough and has been dropped (even thrown) multiple times. In a few fits of rage I tried smashing it and the water bottle is tougher than what it was to be smashed against. One time while fishing the bottle fell out of a bag and ended up in the lake. I didn't know at first and had to look for it later. Though the outside was covered in weeds and dirty no lake water or debris penetrated the bottle. Amazing canteen that surpasses my Yeti bottle. Absolutely would buy another Iron Flask if mine didn't work so well.

Absolutely love this. Bought to replace my bottle I lost in an airport (different brand), I took a chance on this company. It’s fantastic! My water stays cold much longer than my old bottle, no leaking (tested through four flights, three airports, two road trips, & a month of everyday use). Loved the flip lid but also got the spout lids as extra add-ons & they are really great too! Ended up buying four more as gifts for family! Easy to clean, perfect size (larger than previous bottle), & it’s been dropped a few times & no dents or scratches yet! The colour is lovely too!

I got a lot of great use out of this bottle! I had it for a few years but eventually it developed a smell and I had to toss it. The design is adorable and the size is perfect! Easy to transport but not too small. The seal never leaks and the water stays cold for a while!

tldr; I've had it for one day, seems pretty good, I support it, if that counts for anything. If you have doubts, take a look at the Aquatix Fliptop mentioned below as it's a great bottle. I'll update this review if anything happens (leaking with a seal in place, container doesn't maintain temperatures, etc.). Update, 3/19/20: I filled my 40oz. Iron Flask with 10 cubes of ice and cold water; the 32 oz. Aquatix with 6 cubes and cold water. I figured the 8 oz difference warranted more ice for the Iron Flask. It's been 3 hours, and the Iron Flask's ice is all melted, but the Aquatix is still going super strong, all six cubes are there, albeit 1/2 - 3/4 the original size. If you're looking for something to keep your drinks cold, the Aquatix is the way to go. But I'm sure both bottles have their merits to each individual person. To begin, I use an "Aquatix Fliptop double insulated vacuum sealed 32 oz." So why'd I buy this? I live in a pretentious town that thinks its amazing, but the drinking water served everywhere is pretty terrible without a filter. That's just America these days, and if you disagree, just give it time to reach you, or maybe you're already acclimated to terrible water and can't differentiate anymore. I go to the gym, smoke a few j's with friends and hike, I walk 4+ mi's and run 3+ mi's every day, not including sprints. I partake in archery, rock-climbing, and bowling; I'm active AF. So, I thought, if I'm gonna want decent drinking water throughout the day, then I'll need another bottle. I also thought that instead of spending $100 on White Russians during my bowling leagues, I could just buy the $30 supplies, mix it, and keep it in this BLUE 40 oz thermos. I think 16 oz. would suffice, but better safe than sorry. I checked google for the best drinking bottles; then correlated it with Amazons selection. Thus, here we are with Iron Flask. SO first things first: TEST FOR LEAKS. I'm only going to be using the straw lid, so I tested it out-- there's many notorious reviews commenting on it. I didn't experience any leaks with that lid. I'm assuming the leaks are probably because these people lost the rubber seal that goes inside the lid, along the rim; or maybe the flip top isn't closed completely. Secondly, it's pretty easy to handwash. I just put a little soap in, hot water, and shake it for a few minutes like I'm mixing a cocktail. Could it be easier? Yeah, it'd be nice to throw this into the dishwasher. We can build spaceships, sell $200 phones for $1600, quarantine an entire country because the healthcare system is a joke-- so I dream one day we can make these bottles dishwasher safe. Lastly, the styling is amazing. I got the 40 oz "Dark Night" variant, but if this holds out for a few months (if not years), then I can absolutely see grabbing the "Dark Rainbow," and "Lime," variants too. They all seem to look nice though. So what's wrong? They give you an extra straw, three lids, BUT NO REPLACEMENT SEALS. My Aquatix came with a replacement seal, which I actually needed as I noticed it was leaking, and found the seal to be gone. Busted out the replacement and its been going strong for almost a year since. You don't know what you got 'til it's gone, and I promise, a replacement seal is very welcome. Hopefully this review helped, it's a great container. If you have any doubts, I can swear by the AQUATIX I previously mentioned: it's been solid, dropped dozens of times, still going strong. The best part is that I can put 4-8 ice cubes in it, cold water, and go throughout the day, 6-8 hours, and have it be as chilled as it was when I filled it. I've filled it with ice and water before bed, and woken up to the same ice cubes floating around. I capitalized AQUATIX so you know this last paragraph is in regards to the AQUATIX.

This is an amazing cooler or flask or water bottle, whatever you want to call it. It keeps your drinks cold for at least 24 hours. My wife left it in the golf cart at the course. I picked it up the next day and the ice was still solid it did not melt. Now you could buy a couple of other water bottles from some of the name brands and pay at least twice what you are paying here, but you would not be gaining anything. The only difference is that you cant put a design on this. However the colors are pretty cool. I think i would rather save a few bucks and live without the design. I love this water bottle/ flask/ or cooler. I would highly recommend this item.

BEST water bottle I've had in a long time. I am CLUMSY! I have damaged, dented, and flat out broken numerous water bottles over the years. I try to carry water with me all of the time. I'm not the healthiest of souls, but I do try to make sure I am staying hydrated. (I figure, at least I am getting ONE thing right each day.) I do not know how many times I've knocked this off of my desk, banged it into something, dropped it on the ground. Over and Over. And aside from maaaybe a little nick in the paint - there's no damage to this thing. It's great!! EXTREMELY durable. I've only tried it with cold/room temp drinks - but it holds the temperature well. I am a roller derby girl, and we NEED hydration. This has gone to sooo many practices and bouts with me. I would recommend this to others without a second thought. (In fact, I bought my bf one too. Sooo - there's that. Repeat customer!)