Hydro Flask 21oz Insulated Water Bottle

Hydro Flask 21oz Insulated Water Bottle -

Product Details    

Style: S21

Stop forcing lukewarm water and cold coffee down, and keep it refreshing with the Hydro Flask 21oz Insulated Water Bottle. This 21-oz food-grade stainless steel bottle uses double wall vacuum insulation to keep your chilled drinks cold and hot drinks hot. Its 1.81-in mouth is big enough to drop ice cubes into.

  • Medium sized 21 oz capacity
  • 18/8 food-grade stainless steel makes for rugged, BPA-free, recyclable construction
  • Double wall vacuum insulated design keeps drinks cold for up to 24 hours, or hot for up to 12 hours
  • 1.81" standard mouth offers smooth drinking and easy icing
  • Lifetime warranty against defects
  • Cap is dishwasher safe / bottle is not

Questions and Answers

ASK A QUESTION Got questions about this product? Ask them here. Got questions about anything else? Please see our FAQ.

REVIEW SNAPSHOT®

by PowerReviews
Hydro Flask 21oz Insulated Water Bottle, Lychee Red
 
4.5

(based on 67 reviews)

Ratings Distribution

  • 5 Stars

     

    (51)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (4)

  • 1 Stars

     

    (2)

88%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

This was the size that sold me!

This was the starter size for me that lead to my collection of all of the hydroflask sizes, except the 24oz (recently added, that's next).At first I bought this as a trial...Read complete review

This was the starter size for me that lead to my collection of all of the hydroflask sizes, except the 24oz (recently added, that's next).At first I bought this as a trial for my husband to take to work. He's a fuel truck driver on Oahu and the heat with humidity can make u sweat like crazy. He filled it up with half ice and water and he said it was wayyyyy better than the plastic frozen water bottles that he'd reuse all the time. Then he said he wanted a bigger size just for him. So I got him the 40oz n he said after 4 days it's not big enough so I got him the 62oz n he's been happy eversince. Me I had to get 32oz as the 21oz wasn't lasting me all day. But we still use the 21 when we gotta drive around alot as it's the only one that fits the standard size cup holder in our truck n we have the 64oz filled up ready to refill our 21. Bcuz of having access to ice cold water all the time. This product has helped us to lose weight alot and proud to say no more cotton mouth anymore. The reason I choose only this brand is their lifetime warranty, no one has this. I'll gladly pay the price for high quality and they keep their word too! I had 2 of my flasks returned using the warranty and had no problems since. As far as choosing btwn the stainless steel and the color. We ended up liking the one with color, the reason on is the heat. When u touch the stainless steel one and left iy in ur hot car, it's hot to touch but the ice is still there. When u do the same with the color one, its doesn't burn n there's grip to it. Like a sand kinda paint for it so it's not slippery like the stainless. My only little concern is having the larger sizes fit in the cup holder. But then again I understand the design would make it more expensive, besides other people makes holders, etc. so I can hang it from the neck part of my seat in my truck. Thank you Hydroflask for an awesome product. Sincerely, Da 808 couple!

VS

Most Liked Negative Review

 

Sweat sweat and more sweat

I just received my 21Oz standard mouth stainless steel and it's 80 degrees with 41% humidity right now. I filled it with ice and then filled it with room temp water. I realize that...Read complete review

I just received my 21Oz standard mouth stainless steel and it's 80 degrees with 41% humidity right now. I filled it with ice and then filled it with room temp water. I realize that some Ice will be melting due to the room temp water, but it's sweating all over my desk and I'm pretty sure this should not be happening! NOT HAPPY, also, about half the ice is gone and I have not opened it more then one time for a quick sip. Did I get a lemon or what? I expected more, A LOT MORE for this price and from a name I THOUGHT I could trust! My biggest regret is I also ordered the wide mouth 20OZ also that I have not gotten in the mail yet. Right now I don't want either of them!

Reviewed by 67 customers

Displaying reviews 1-20

Back to top

Previous | Next »

(1 of 1 customers found this review helpful)

 
5.0

Ice cold!

By 

from St. Louis, MO

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

Amazing product, liked it so much i immediately placed a second order. I ride the Katy Trail in MO and I used to rely solely on my Camelbak but never liked the taste nor the warm temperature and adding ice to the pak helped but only for 30 to 40 mins. I usually ride 20 to 30 miles so half way in i'd be stuck with warm water, but no more. I have a 21 oz and 18 oz Standard Mouth Hydration bottles that provide ice cold water for my entire ride!

 
2.0

No durable

By 

from Brooklyn new york

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I got the new hydro flask sport kid 3 weeks ago, after having a different brand lid for 3 years. Just today my water bottle fell (as it often does) from my kitchen counter to the ground and the lid broke! I'm super disappointed as I have been waiting for Hydroflask to update their sport lid from the original all hard plastic lid that leaked to something more like this. Unfortunately it's not as durable as the actual bottle!

 
5.0

Best insulator ever!

By 

from California, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

My boyfriend recently bought the 21oz hydroflask for me while we went to Coachella (3 day outdoor music festival with scorching temperatures). When I tell you the ice we placed in our hydroflasks we're still intact from morning to practically 3pm I knew this was genius technology. And the water was refreshingly icy as if it came from the Swiss glaciers themselves. Definitely a must have!!!! And after a week later I'm still thank him for it!

 
3.0

Great bottle, bad lid

By 

from Undisclosed

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I got my water bottle for Christmas. I have wanted it for a long time, and it was well worth the wait! The bottle keeps my water and ice cubes cold for hours, even over night. I haven't tried putting hot liquid in it so I can't comment on that, but this is excellent for keeping beverages cold! However, DO NOT get the sports cap! It leaks everywhere, even when closed! This is because when the water bottle is inverted, water pours out of the air hole, which is what allows for a smooth drinking experience. However, when you aren't drinking it and it turns upside down, water comes straight out of the air hole. I have ruined many things in my purse on multiple occasions. I love caps that you can drink directly from, but because this one spills so much I have had to switch back to the screw-on cap.

 
4.0

Good size & great for COLD drinks

By 

from Phoenix, AZ, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I got this as a gift from my daughter who loves them. I was reluctant because I'd been using big cups with handles. Well, I like this and use it EVERY day with the sports top. After I dropped it many times over nearly a year it no longer keeps drinks cold so I'm needing a replacement. I'd love to see a few changes: 1) NOT leaking when turned on it's side, 2) listing # ounces somewhere on the base so I don't have to guess when I reorder and don't have a handy way to measure, 3) having a way to hook on a shoulder strap for when I'm juggling several items (that's what led to my dropping it).

 
5.0

I have one

By 

from Vancouver

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

Hey wassup I'm a freshman in high school guys and I love my hydro flask I drink a lot of water in the day and this fits in my backpack just perfect keeps my water freezing cold all day long ... I love water and I definitely recommend this product...A+

(1 of 1 customers found this review helpful)

 
4.0

Awesome!!

By 

from North Pole

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

It dents very easily but it keeps water very cold!

(1 of 1 customers found this review helpful)

 
5.0

Best Bottle Ever

By 

from Undisclosed

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I've had this bottle with the sports cap for over a year now. Yes it drips a little when it's tipped over, but I don't make a habit of having it tipped over so not sure why that's an "issue" for some. Also, this is in the hydration line, which means cold drinks. They have an entire line called coffe for hot drinks. So again, the review that said this product was useless was wrong. Best bottle I've ever had!! It keeps my ice for at least 3 days if I've constantly got liquid in it. And my bottle has been through the ringer and still going strong!!

 
5.0

Worth it!

By 

from Washington, DC, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I got this 2 years ago for Christmas and I still use it everyday.

 
5.0

My bottle still had ice!

By 

from Idaho Falls, ID

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I purchased my bottle after a few friends told me about theirs. I received, immediately filled it up with ice and a day later, it still has ice. I love the bottle and my co-workers now hate how much I talk about the ice in my bottle!

 
5.0

Absolute best water bottle ever

By 

from Seattle, WA, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

This water bottle is by far my favorite. Literally keeps water cold for days. I have had my hydro flask for over a year, and still use it daily! It has quite a few dings and dents but does the job! Will be buying another one for sure!

(1 of 2 customers found this review helpful)

 
2.0

It's nice

By 

from Ca

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

It is highly priced as is. Why do you have to buy the lid/cap. Much better out there for the price.

 
4.0

Colors

By 

from Scotts Valley CA, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I bought this as a gift for a friend, and when they recommended I buy one for myself, I was a little dissapointed to see the limited color range. Don't get me wrong, the colors are great, but I don't see myself buying one until HydroFlask comes out with a pink bottle. I am all about accesories complimenting my outfits. I'd like to see more colors to choose from that are more suitable to my personality and versatile to my every day outfits at school to my outfits when I'm working out.

 
5.0

21 oz Hydroflask

By 

from San Luis Obispo, CA, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I bought my hydro flask about 4 years ago and it is fabulous. I have since purchased for multiple friends and they have the fever. they now buy them for there friends as gifts.... the best

(0 of 1 customers found this review helpful)

 
5.0

Most awesome drink container ever"

By 

from Portland Oregon

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

Hubby gave it to me as a gift. Love, Love , Love it!

 
5.0

Hydroflask Review

By 

from Oregon, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

I am the type of person that never drinks but since I bought this I became way more hydrated. A Hydroflask is one of the best things to buy when you are trying to be hydrated. The durability of a Hydroflask a phenomenal! It doesn't leak, or spill. If you were to drop it; it wont bust open, you may get a dent or a scratch but that's true with most things. My favorite thing about Hydroflasks is that it keeps its temperature. If you like coffee it's going to keep it warm for about 12 hours. Better yet if you like cold drinks it will keep your ice solid for over a day! There are multiple sizes from 12 ounces to 40 ounces! They also have other shapes to hold food like soups, oatmeal, and some people even keep chicken breasts in them. There's also varieties of heights, widths, and shapes. A big plus for artsy people is that you can buy all sorts of accessories to personalize it. There's 12 different colors, different types of lids like a straw, pop off or a twist off lid. You can buy sleeves for around it and even stickers to plaster all over it. One question everyone will ask is, what makes it different from every other thermos? Or how it's better. This question can be answered with many different opinions but I believe that the durability is great. The different accessories and colors make more people interested in wanting them because you can personalize it to match your personality. Most of all is how well it keeps the temperature of what you put in it. I believe that's the best reason to buy a Hydroflask.

 
2.0

Some features work but some do not.

By 

from Baton Rouge, LA, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

The container does keeps liquids cold for over 24 hours and it keeps liquids hot for about 4 hours. Condensation forms on the outside of the bottle within 10 minutes if the bottle is filled with cold liquid and taken to an hot environment. I filled my container with ice and water and put it in my bag and then walked outside for about 45 minutes. It was 96 degrees Fahrenheit outside and the inside of my bag was wet. I thought that maybe I didn't correctly close the container so I took it home and decided to run more test on it. I filled it up with more ice and water and sat it outside to see what would happen. When I returned 10 minutes later condensation was on the bottle. The bottle does keep the liquid cold but the condensation is a huge downside.

(2 of 5 customers found this review helpful)

 
1.0

very disappointed

By 

from Utah

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

The sport top drips when the bottle is lying on its side. Also, I had hoped to use it for coffee but the sport top isn't appropriate for hot drinks and the flip top doesn't fit this bottle. So...since it leaks with cold drinks and cannot support hot drinks, it's pretty much useless for me.

 
5.0

Amazing !!!

By 

from Lawrenceburg, IN, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

Absolutely love hydroflask! My water for work stays ice cold until I drink it all. Had a problem with my flask and hydroflask took care if it immediately, no questions asked and replaced it. Love the product love the company.

 
5.0

Ice Cold Water in Blistering Heat

By 

from Houston, TX, United States

Comments about Hydro Flask 21oz Insulated Water Bottle, Lychee Red:

Who on God's green earth ever thought a plastic water bottle was a good thing for bike riding? No matter how much ice you put in a plastic bottle after just 20 minutes of bike riding in Houston summer heat you will be drinking plastic tasting hot water. I love my Hydro... ice cold water, even after a 2 hour bike excursion in the blistering summer heat around Houston, TX. I cover my 21oz with a neoprene sleeve and it fits tight in bicycle water bottle holder covered then carabiner hooked top loop to bike for extra security. Stays in place even offroading on my mountain bike. Just throw away your BPA bottle and join the 21st century.

Displaying reviews 1-20

Back to top

Previous | Next »