Customer Reviews Hydro Flask 21 oz Standard Mouth with Standard Flex Cap

I really liked this product. This bottle is a very nice size. I especially liked the carrying handle. I carry ice in it for my dog, and it stays frozen for hours. I do feel it is a little heavy when filled. All in all it is very convenient

I love my Hydro Flask 21oz Standard Mouth, it keep my drink cold for hours and it is easy to carry around. It will come in handy this winter too for hot beverages like coffee and hot chocolate. I just wish it was dishwasher safe but I still love it.

What i like most about the Hydro Flask 21 oz Standard Mouth Waterbottle is how my water stays ice cold all day long no matter the temperature outside and how there is never condensation on the bottle. Main reason I had to try it out, no condensation .

I'm so happy I tried this flask. I drink water all day long. I was able to refill, and the flask literally kept my water cold all day. Great color, cool design, easy to carry and drink from. Love this flask. Highly recommend

Great product...this hydro flask is wonderful keeps drinks hot or cold for hours. Great for coffee, tea, soups...and many more liquids. absolutely love all the color varieties. Definitely would recommend

It kept my beverage cool from 10am in the morning until 6pm in the evening, which was awesome! And the bottle really doesn't sweat, no matter how cold the beverage is and how hot or humid it may be outside. I would like the bottle better if the part where you put your lips were either covered by the cap or if there was a covered spout inside or something. While I'm out and about, no matter how clean I try to keep my hands, if I touch the neck of the bottle (which is where you put your mouth), I'm thinking to myself, "Ugggggh...do I really want to drink from it now?" And the neck of the bottle it just instinctively the part you'd (or anyone else) would grab. It's going to be handled a lot. Maybe I'm a little germaphobic, but I don't think it's much to ask to keep the part where we drink completely covered. Anyway, other than that, I really love the bottle for keeping my drink cold, for not sweating (so I can put it in my bag without worry), and for being a good looking bottle!

I got This product free from a sampling company i am In(try it sampling). I was Super excited that i would Love this product but i just Simply don't. Maybe for someone else but wasn't for me. I did Like how it kept everything hot and cold. I did Not like the way the flask went up or the lid. I feel If they could work out the tip of the bottle it would be much better.

I bought this thinking it was going to be mint green but when i got it it was a way brighter and more teal color then the picture and the description. but on the bright side it works and does what it is supposed to do i just wish it was the color that it said

This water bottle has gone through EVERYTHING with me. I hesitate to call it a water bottle because I use it just as frequently for coffee and hot drinks. I have found that it might not keep things as hot and cold as advertised (12 hours hot or whatever) but truthfully I question how necessary it even is to have something hot that long on a day-to-day basis. Regardless, the exterior of the bottle is TOUGH and mine has endured all kinds of falls onto some unforgiving surfaces. If you're looking for a bottle that can keep things hot and cold for long periods of time and is very durable, this bottle is a perfect fit for you.

It's OK. It's very heavy. And tastes a bit metallic.

Very fragile, after 1 foot drop the cover cracked.

Its vacuum-insulated, 32-fluid-ounce body does a great job at keeping a lot of liquids hot or cold for extended amounts of time, regardless of the external temperature.

I guess I have a petite mouth because the mouthpiece at the top of the bottle on these seems GIGANTIC. Very hard to drink out of this while running at the gym, for example, without slopping it all over. I have definitely spilled on myself multiple times already just drinking out of it normally. Won't be ordering this type of top again.

Bottle is great but the add on sport cap broke after one week. It was knocked onto its side on the floor and the cap broke. It was Not even dropped - would never hold up to rough use.

I was given this bottle as gift, it kept my water cold but I noticed rust spots inside both of the bottles I was given. I was given the 32oz size and the 21 oz size both are rusting for this reason I don't think is a good investment. But it was great until it rusted.

I love this water bottle but it is not durable to take anywhere. ALL bottles should come with a silicone/rubber sleeve for the bottom so that they don't dent so easily on the bottom.

I was thoroughly impressed with Hydro Flask's ability to keep beverages hot or cold for hours. Furthermore, the steel container gave it a polished look. However, unfortunately my Hydro Flask fell approximately 3 feet onto the sidewalk where it got dented at the bottom rim. As a result the vacuum insulation was compromised and the container no longer keeps the beverage at the desired temperature. For the price of the item, I would expect that this item is sturdy enough to still function after a simple drop or knock.

I got a 32 oz Hydro Flask in exchange for an honest review. I love the size and look plus you get an extra straw. A real plus was the rough finish on the outside of the bottle, I found it made the bottle easier to hold onto. The flip top meant My drink wasn't spilling all over even if the bottle was laying on it's side. My drinks didn't stay cold very long, any ice I put in melted in minutes which meant warmer drinks. However, if you just use it for water when biking or exercising it was fine. Overall, it is a pretty decent drink bottle because of the size and design.

I received this type of Hydroflask as a Christmas present in 2021. I did not open it and start to use it until the beginning of March 2022. After a month of use, there is a rust spot inside. The material is supposed to be stainless steel. So there shouldn't even be the possibility of rust. I have many other Hydroflask products and this is the only one that has rusted a little. But, I am still disappointed in a company I have trusted for so many years.

Flask itself are well insulated however not the cap. Heat is leaking via the cap.

It's not terrible, but you can easily find comparable water bottles at a much lower cost. Also the cap squeaks when screwing it on which is annoying.

I bought this a few months ago, it kept my drinks cold, but the inside was dark, and hard to wash. I do not know WHAT grew in there. It dented easily. Whenever it fell on the floor, some flakes and mold looking things appeared.

My daughter has used this for less than two weeks and there is already a crack in the paint. I wanted to love this bottle so much, so pretty and the size is perfect. Unfortunately, with the crack in the paint job, I think I will just get her a Yeti next time. They seem to hold up better.

I have purchased 4 Hydro Flask products -- a 21 oz bottle, a 20 oz coffee mug, and two 10 oz wine tumblers. All of them have dented almost like they were cardboard. The bottle was bumped off a counter at work, fell about a foot and a half to the floor, and the dent creased the exterior and ruined the insulation factor. So I got a coffee mug and a bottle boot (along with the wine tumblers), because the insulation is great. The bottle boot helped, but it again fell at work (same distance); the boot made it bounce, but it still sustained a dent so deep it wouldn't stand upright on it's own. The boot helped it stay up, but the mug became more unstable, fell over at work again, and sustained another deep dent. It just wobbles now. And recently one of the wine tumblers fell a foot from a cupboard onto the counter when some items were being put away, and yeah, two more dents. Plastic is more durable, and even some inexpensive (but less insulating) metal bottles I've had have taken far, far more rough treatment and have just scratched. Considering the Hydro Flask products are meant to be outdoors items (which I got them for as well as work), you'd expect something more durable for the premium price.

I bought this bottle believing that it would keep my water ice cold for hours if not an entire day. Sadly I was disappointed seeing as all the ice melts and the water warms up around the 2 hour mark. Maybe I just got a defective one but be warned it might not keep your beverage cold for long.