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

I got this as a Christmas gift and I love it so much!! 10 out of 10. Great water bottle quality. Beautiful water. The bomb dot com.

Two weeks in and I'm loving it. Already traveled on a plane with it, took it to the beach, take it to and from work on my bike every day, and dropped it on the floor. I've never had an insulated bottle before so it's been regularly surprising how cold it keeps my water. I haven't achieved the 6/8+ hours of ice that some people claim, but I also don't use a lot of ice and often don't close the lid out of laziness.

I never thought I would write a review about a water bottle. I am a big water drinker and hot tea drinker. This bottle keeps the tea hot (not lukewarm but hot) for hours. I can also fill it up with a cold drink and it keeps ice in it forever. I also really like outside of the bottle. No condensation and it is easy to hold. It was definitely worth the money.

I bought my first Hydro Flask five years ago and have never used another water bottle since. I just recently lost my 18 oz and got the 21 oz in stainless steel and love the quality, cap, and look. I would definitely recommend getting this water bottle to anyone, and if you unsure about buying it, trust me, it's worth it. :)

I bought this recently and it's my favorite water bottle. It is amazing at keeping water cold and hot. I also like how the metal taste doesn't transfer onto the water. Although it does dent quite easily, it is still an amazing water bottle.

Absolutely love this water bottle I own multiple. But when am I going to be able to buy one in light pink

I enjoy cold water but dislike the condensation that comes with adding ice to a plastic bottle. These are perfect! All 4 of our family members have one and we use them daily. I've had to replace 2 because my husband and daughter dropped them on the driveway and they dented at the bottom. There still good, but don't stand up straigt due to the dent. Our fault, oops! I will continue to be a fan- Hydro Flask is awesome!

I bought this water bottle for school and I have used it every day since. It keeps my water ice cold in this 105-degree desert and despite dropping it several times, it has held up very well. This hydro flask also looks very nice and is easy to carry. In the end, this is an amazing water bottle as it is very durable, keeps iced water very cold, and looks nice.

I received my hydroflask as a gift and I absolutely love it !

My go to everyday water bottle! I carry and count on this bad boy to get me through the day!

I brought for a few day in Japan I love it and my family love it too

I brought for a few day in Japan I love it and my family love it too

i have no idea what the other person is talking about, this bottle is so awesome. I have it in green a friend bought it as a gift. Keeps thing cold, keeps things hot. Just like i want it. GET THIS BOTTLE!

i have no idea what the other person is talking about, this bottle is so awesome. I have it in green a friend bought it as a gift. Keeps thing cold, keeps things hot. Just like i want it. GET THIS BOTTLE!

I always buy these water bottle.

The mouth, even though is the smaller one of two, is still too wide to easily drink out of the bottle. Other than that I am happy.

Hydroflask makes a good product , but gave it a 4 due to cost and unlike several of their competitors...it doesnt come with boot . Have to buy boot separately. I want boot for it to reduce noise , reduce denting , and I feel it increases stability a bit

I love the size and color. Hydro Flask always makes the best products. My only gripe with the standard mouth bottles (and the only reason this is 4 stars) is that the metal part where you sip from is exposed and in a spot that's very tempting to grab if you're not thinking. It's just not sanitary and a pretty big bother for germ-conscious folks like myself.

This is a great size water bottle. It's not too bulk and doesn't get too heavy when full. Best of all it keeps your water cold. The cap fits great and is easy to turn. The anodizing on the bottle is a good color and evenly done.

I've been using it for 2 weeks now and I love it so far! I really love the color. The only thing that was off at first was the smell inside; it smelled like metal-ish (new water bottle, not pleasant), after a few hours the smell wasn't that noticeable (I also washed it before use). All in all, it was clean, in great condition, the size is good and it clearly met my expectations. The ice melts after 2 hours. However, it does keep water cold for the 2-3 hours I'm at work. Way better than some other brands that I've used in the past.

It's a little harder to drink from than I expected. I got used to the press in lid on my tumbler.

This hydro flask is the perfect size for daily use without feeling too heavy. I put ice in one evening around 7pm, forgot it the next morning and when i got.home that evening there was still about 1/2 the ice inside. I was impressed. My only complaint about this specific flask is that the straps (while cool and useful) can only be changed out with a special tool and the 2nd one needs 2 people to get it on properly. Other than that, I love it.

I received this hydro flask it looks very nice. The quality of the flag is great it is very strong. It also has a handle which is really cool you can change the colors. It keeps cold stuff cold and hot stuff hot.

Although I typically prefer a larger bottle that I have to refill less often, this size is perfect for on the go and taking pretty much everywhere. My 5 year old has pretty much taken it over and it's a perfect size for him. I also wish Hydroflask would have a straw top, but the twist top is easy enough even for little hands. The bottle keeps drinks hot or cold for a long time. I don't even know an exact number because I finish the drink before it has a chance to cool down/get warm. The narrow opening and tall design make it a little challenging to clean. I use a bottle brush but it's not quite long enough to get all the way to the bottom Overall would recommend this product

Well made, very nice looking and durable flask. Item arrived quickly from company, wish price included the mouth piece.