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Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation

4.8 4.8 out of 5 stars 22,973 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Insulated Bottles by Hydro Flask

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21 Oz
White

Purchase options and add-ons

Brand Hydro Flask
Capacity 21 Fluid Ounces
Color White
Special Feature Cold,Dishwasher Safe,Hours,To

About this item

  • TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours
  • Made with 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavor transfer
  • Flex Cap is leakproof when closed, to transport without worry
  • Flex Strap is easy to transport and comfortable to carry
  • Honeycomb Insulated cap for maximum temperature retention
  • Color Last powder coat is dishwasher safe, keeping your bottle slip-free and colorful
  • Fits most backcountry water filters

Frequently bought together

$27.34
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From the brand


From the manufacturer

Standard Mouth Flex Cap Water Bottle Hydro Flask
Standard Mouth Flex Cap Water Bottle Hydro Flask
Standard Mouth Flex Cap Water Bottle Hydro Flask
tumbler, tumbler with straw

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Hydro

Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation


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Customer reviews

4.8 out of 5 stars
4.8 out of 5
22,973 global ratings

Customers say

Customers like the color, performance, coldness, leakage, and quality of the water bottle. For example, they mention it's stylish, holds temperature exceptionally well, and does everything it claims. That said, they appreciate the secure seal of the cap and the fact that it doesn't leak.

AI-generated from the text of customer reviews

737 customers mention539 positive198 negative

Customers like the quality of thermos. They say it's heavy duty, reliable, and stylish. Some say it keeps liquid cold for around 6 hours with no ice. Overall, most are happy with the product and recommend it to others.

"...has become my go-to hydration companion, combining functionality, durability, and temperature retention for a superior drinking experience...." Read more

"...Its unparalleled insulation, durable construction, and thoughtful design make it a standout choice for those who prioritize both form and function..." Read more

"...Its durability, insulation capabilities, and user-friendly design make it a top-notch choice for anyone in need of a reliable water bottle...." Read more

"...Overall durable, though if dropped just right, the lid and handle can break..." Read more

641 customers mention562 positive79 negative

Customers like the coldness of thermos. They say it maintains their water super cold, holds temperature exceptionally well, and keeps it fresh and cool for hours. The product is also good at insulating and does everything it claims. Customers also mention that it holds ice well and is the perfect size to still be able to carry.

"...The Hydro Flask kept my water refreshingly cold despite the hot weather, and the Flex Cap made it easy to carry while keeping the sand out." Read more

"...Its unparalleled insulation, durable construction, and thoughtful design make it a standout choice for those who prioritize both form and function..." Read more

"...Its durability, insulation capabilities, and user-friendly design make it a top-notch choice for anyone in need of a reliable water bottle...." Read more

"...drink in the afternoon, the Hydro Flask maintains the ideal temperature with remarkable consistency...." Read more

246 customers mention221 positive25 negative

Customers like the size of thermos. For example, they mention it's the perfect size and keeps drinks cold for a long time, it fits in their car cup holder, and it'll fit into their crossbody sling. The standard mouth size is just right for sipping or pouring without any spills. It's a good size to hold and is the perfect travel size.

"...The standard mouth size is perfect for sipping, and it accommodates most ice cubes for those who prefer their beverages extra cold...." Read more

"...Refilling is a breeze, thanks to the wide mouth that accommodates ice cubes and facilitates easy cleaning...." Read more

"...The standard mouth size is just right for sipping or pouring without any spills...." Read more

"...My kids and I absolutely love it! It’s a beautiful color and fits in the car cup holder...." Read more

225 customers mention218 positive7 negative

Customers are satisfied with the color of thermos. They mention it's stylish, has a beautiful color, and is BPA free. Some appreciate the color options and the cute little logo printed on it. Overall, most are happy with their purchase and recommend it to others.

"...The Hydro Flask's sleek design and vibrant color options add a touch of style to my daily hydration routine...." Read more

"...Its unparalleled insulation, durable construction, and thoughtful design make it a standout choice for those who prioritize both form and function..." Read more

"...Its durability, insulation capabilities, and user-friendly design make it a top-notch choice for anyone in need of a reliable water bottle...." Read more

"...I highly recommend it to anyone seeking a reliable, stylish, and eco-conscious hydration companion. Cheers to staying hydrated in style!" Read more

141 customers mention119 positive22 negative

Customers like the leakage of thermos. They mention that it does not leak at all, the secure seal of the cap prevents leaks, and the lid seals tight.

"...The secure seal of the cap prevents leaks, giving me confidence to toss it into a bag without worrying about spills...." Read more

"...easy sipping and pouring, and the Flex Cap adds convenience, providing a reliable seal to prevent leaks and spills...." Read more

"...The leak-proof design gives me peace of mind, allowing me to toss it in my bag without worrying about spills...." Read more

"...at work, in the garage, on the trail. The straw is nice and does not drip, but would like to have a softer material...." Read more

116 customers mention109 positive7 negative

Customers are satisfied with the performance of thermos. They mention it serves its purpose well, keeps water cold and hot all day. Some appreciate the durability and style of thermoses. Overall, thermos is a great product that is functional.

"...In summary, the Hydro Flask has exceeded my expectations in terms of performance, durability, and style...." Read more

"...this a few times, but other than a small dent it still looks and functions well." Read more

"Works well. I use it when I go to gym." Read more

"recipient loved it. Same brand as one I have and it works flawlessly.. keeps water cold, and does not leak even why lying on its side." Read more

114 customers mention101 positive13 negative

Customers like the portability of thermos. They say it's easy to carry around all day, durable, and handy for travel. They also appreciate the handle up top and strap for carrying. Customers also say thermos is great for air travel, keeps liquid cold all day and is easy to hold. They mention the slim design and the flex cap is awesome to carry.

"...The flexible strap makes it easy to carry or attach to a backpack, providing a hands-free option during hikes or workouts...." Read more

"...The wide mouth makes it easy to access every nook and cranny, and it's dishwasher safe for added convenience...." Read more

"...it every time I took a drink or poured from it.*Cup Holder friendly in my old Jeep*Nice color*Sturdy construction..." Read more

"I’ve got a larger Hydro Flask I use at work, but this one is perfect for traveling...." Read more

137 customers mention81 positive56 negative

Customers are mixed about the value of thermos. Some mention it works well and is a good value, while others say it's overpriced, not worth it, and a useless chuck of metal.

"...Easy product to clean and maintain. Healthier and cheaper than plastic water bottles. The product has now paid for itself after 30+ days." Read more

"Love the color so my vibe. My only issue with hydro flasks is how expensive they are and how bad the quality is...." Read more

"Great product! Works well and is a good value!" Read more

"This bottle is amazing and $18 is a wonderful price, nothing to complain but a little scratch in the painting, which is small but it makes the..." Read more

I am both pleased and impressed!
5 Stars
I am both pleased and impressed!
It about wore me out looking at insulated bottles with so many out there to choose from!I am a heavy coffee drinker and wanted to be able to carry a nice, fresh refill for my travel mug while out and about.I will begin by saying that the first photo in my review, does NOT accurately represent the actual color that I purchased, Agave.The fluorescent lights in my shop are not color friendly. The actual color is a soft greyish green, like sage leaves and is very pleasant.Edit to ad: We had a spot of sunshine on the back porch today, so I took it out in the sunshine for a better pic. Much better color representation in the last picture.Initially, I was looking in the $20 range and found a lot of products that were "close" to what I wanted, but no cigar. After looking at the Hydro Flask page and seeing that accessories and replacement parts are available, I decided it would be worth a try. At the steeper price, over twice the price in many cases, it was worth it to get exactly what I wanted.My search criteria was as follows: * A Wide Mouth: For ease of filling, cleaning, easy pouring and nice big gulps. No straw or spout to clean or fiddle with. .*A Plastic Stopper: Because stainless on stainless threads are prone to galling.* No Big, Fragile or Obtrusive Handle: Didn't want something that would break off or get in the way or a lanyard to collect crud.This handle is small, folds back unobtrusively and is flexible so shouldn't break if twisted or bumped.*Easy to fill with hot liquids or cold beverages with ice.*A Centered Spout: So I didn't have to look and align it every time I took a drink or poured from it.*Cup Holder friendly in my old Jeep*Nice color*Sturdy constructionThis has absolutely ticked all of the boxes.It's slim enough to hold comfortably, very attractive without being showy and well constructed.I think we're going to be coffee drinking buddies for a very long time.
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Top reviews from the United States

Reviewed in the United States on January 10, 2024
Style: 18 OzColor: StoneVerified Purchase
4 people found this helpful
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Style: 18 OzColor: StoneVerified Purchase
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Reviewed in the United States on October 31, 2023
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Top reviews from other countries

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Amazon Customer
5.0 out of 5 stars Durable
Reviewed in Canada on March 9, 2024
Style: 21 OzColor: AgaveVerified Purchase
Magi
5.0 out of 5 stars Justo lo que buscaba
Reviewed in Mexico on March 4, 2024
Style: 18 OzColor: AgaveVerified Purchase
Isa
5.0 out of 5 stars Cumple lo que promete
Reviewed in Mexico on February 25, 2024
Style: 24 OzColor: AgaveVerified Purchase
Customer image
Isa
5.0 out of 5 stars Cumple lo que promete
Reviewed in Mexico on February 25, 2024
El color es idéntico a la foto de Amazon, es bastante bonito. El producto cumple con lo que promete, mantiene tu bebida fría o caliente por mucho tiempo, he tenido mi té ahí y dura unas 6 hrs tibio. Hay que considerar que es bastante alta la botella que incluso parece de un litro.
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Customer image
Customer image
Vicky
5.0 out of 5 stars Best Water Bottle
Reviewed in Canada on February 12, 2024
Style: 24 OzColor: StoneVerified Purchase
Bianca
5.0 out of 5 stars Garrafa de ótima qualidade
Reviewed in Brazil on February 7, 2024
Style: 24 OzColor: BlackVerified Purchase