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

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Purchase options and add-ons

Brand Hydro Flask
Capacity 21 Fluid Ounces
Color Black
Special Feature Cold 24 Hours, Leakproof, Dishwasher Safe

About this item

  • 24 hours cold, 12 hours hot
  • TempShield️ double-wall vacuum insulation
  • Leakproof when closed
  • Pure taste, no flavor transfer
  • Durable stainless steel
  • BPA-Free
  • Dishwasher safe

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

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
23,760 global ratings

Customers say

Customers like the portability, leakage, quality, performance, and color of thermos. For example, they mention it's perfect for traveling, the secure seal of the cap prevents leaks, and it lasts forever. That said, they say it works well and serves its purpose well.

AI-generated from the text of customer reviews

777 customers mention572 positive205 negative

Customers like the quality of thermos. They mention it's high quality, made of good material, and durable construction. Some appreciate the unparalleled insulation, reliability, and thoughtful design. Overall, most are happy with the product's quality and functionality.

"...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

"...-coated exterior provides a solid grip and adds to the bottle’s overall durability. It also fits perfectly into the cup holder on my BMW X3...." Read more

"...One other thing to note is that it seems susceptible to dings and scratches, especially on darker colors...." Read more

684 customers mention601 positive83 negative

Customers like the coldness of thermos. They say it keeps water cold all day long, keeps ice for the whole day, and keeps coffee and tea hot. The double-wall vacuum insulation makes it durable and user-friendly. However, some customers report that the ice melts faster than expected.

"...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

"...The double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours...." Read more

"...It comes in a beautiful color, and its double-wall vacuum insulation keeps my beverages at the perfect temperature for hours...." Read more

278 customers mention245 positive33 negative

Customers like the size of thermos. They say it holds ice well, is the perfect size to carry, and fits perfectly in lunch totes and side pockets of back packs. The standard mouth size is just right for sipping or pouring without any spills. It's sturdy, stylish, and the right height and width. It is slim enough to hold comfortably, and it fits the perfect amount of water and fits in cup holders.

"...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

"...It also fits perfectly into the cup holder on my BMW X3. This is my second time around with this bottle...." Read more

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

243 customers mention235 positive8 negative

Customers are satisfied with the color of thermos. They mention it's a beautiful color, cute for sports and gym activities, and has a cute little logo printed on it. The product is durable, easy to clean, and comes in a variety of colors and sizes. It is also BPA free and has an insulation capabilities.

"...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

"I love the size and shape of this water bottle. There are so many colors to choose from that it is hard to make a decision...." Read more

"...The flex cap ensures easy access while preventing spills. Plus, its sleek design adds a touch of style to my everyday routine...." Read more

147 customers mention122 positive25 negative

Customers like the leakage of the thermos. They say the secure seal of the cap prevents leaks and the straw does not drip. Some customers also mention that the bottle does not spill.

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

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

"...The flex cap ensures easy access while preventing spills. Plus, its sleek design adds a touch of style to my everyday routine...." Read more

"...It’s super easy to carry with the handle and doesn’t leak one bit. It’s super easy to clean and is made of very strong material. Highly recommended" Read more

127 customers mention120 positive7 negative

Customers are satisfied with the performance of thermos. They mention that it works well, serves its purpose well, and keeps their coffee hot all day. Some say that the product itself is fine but it just makes it look messy.

"...It might be okay if it were only half full.In summary, it’s decent, but I wouldn’t recommend it unless you are also going to purchase a..." Read more

"Works as it is supposed too." Read more

"Works great." Read more

"Great bottle! Looks awesome and works even better" Read more

122 customers mention109 positive13 negative

Customers like the portability of thermos. For example, they mention it has a handle on the cap, so they can carry it around easily. They also appreciate the strap for carrying, and say it's perfect for traveling or taking with them since it'd not be too big or too heavy. Customers also mention the flex cap is awesome to carry around and the bottle is robust. They say it fits in a golf cart cup holder and keeps water cold for 4 hours.

"...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

"...This size fits easily in my car cup holder and in the side pocket of my carry on airplane bag...." Read more

149 customers mention88 positive61 negative

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

"Good product for price" Read more

"Nothing special but adequate. Could use an added silicon base or other cap options to deliver more value compared to similar options...." Read more

"I like it . It is durable yet expensive" Read more

"Reasonable price for really good quality...." Read more

Fits under the water/ice dispenser of my refrigerator. Ice stays ice all day.
5 Stars
Fits under the water/ice dispenser of my refrigerator. Ice stays ice all day.
I love the size and shape of this water bottle. There are so many colors to choose from that it is hard to make a decision. The double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours. The powder-coated exterior provides a solid grip and adds to the bottle’s overall durability. It also fits perfectly into the cup holder on my BMW X3. This is my second time around with this bottle. The first one still works but I have dropped it so many times that it wobbles a bit. A new one was in order! Do yourself a favor, and get several!
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Top reviews from the United States

Reviewed in the United States on January 10, 2024
Style: 18 OzColor: StoneVerified Purchase
The Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall technology has become my go-to hydration companion, combining functionality, durability, and temperature retention for a superior drinking experience.

The double-wall insulation is a standout feature, keeping beverages cold for up to 24 hours or hot for up to 12 hours. This capability has proven invaluable, especially during outdoor activities or long workdays, ensuring that my drinks stay at the desired temperature for extended periods.

The Flex Cap adds to the convenience with its easy-to-use design. The flexible strap makes it easy to carry or attach to a backpack, providing a hands-free option during hikes or workouts. The secure seal of the cap prevents leaks, giving me confidence to toss it into a bag without worrying about spills.

The standard mouth size is perfect for sipping, and it accommodates most ice cubes for those who prefer their beverages extra cold. The stainless steel construction is durable and resistant to flavor transfer, ensuring that my drinks taste fresh with every sip.

The Hydro Flask's sleek design and vibrant color options add a touch of style to my daily hydration routine. The powder-coated finish not only looks great but also provides a comfortable and slip-resistant grip.

One standout experience was during a day at the beach. 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.
17 people found this helpful
Report
Reviewed in the United States on December 11, 2023
Style: 18 OzColor: StoneVerified Purchase
The Hydro Flask Stainless Steel Standard Mouth Water Bottle has earned its reputation as a top-tier hydration companion, setting a high standard for both performance and design. This water bottle has become an indispensable part of my daily routine, accompanying me everywhere from the gym to outdoor adventures.

The double-wall vacuum insulation is a game-changer, maintaining the temperature of my beverages like no other. Whether I'm sipping on a refreshing cold drink during a hot summer day or enjoying a warm beverage in the chill of winter, the Hydro Flask keeps it at the desired temperature for an extended period.

The durable stainless steel construction is both robust and resilient, withstanding the inevitable bumps and drops of daily life. The scratch-resistant exterior maintains its sleek appearance even after prolonged use, showcasing the Hydro Flask's commitment to quality.

The Standard Mouth design strikes a perfect balance between a wide and narrow opening. It's ideal for easy sipping and pouring, and the Flex Cap adds convenience, providing a reliable seal to prevent leaks and spills. The cap's flexible strap makes carrying the bottle a breeze, whether in hand or attached to a backpack.

The variety of vibrant colors and sizes allows for personalization, adding a touch of style to functional excellence. The powder-coated finish not only enhances the bottle's aesthetic appeal but also provides a secure grip.

Refilling is a breeze, thanks to the wide mouth that accommodates ice cubes and facilitates easy cleaning. The compatibility with Hydro Flask accessories, such as the straw lid, further enhances the bottle's versatility.

In conclusion, the Hydro Flask Stainless Steel Standard Mouth Water Bottle sets the bar high for hydration solutions. Its unparalleled insulation, durable construction, and thoughtful design make it a standout choice for those who prioritize both form and function in their water bottle. Highly recommended for anyone seeking a reliable and stylish companion for staying hydrated on the go.
18 people found this helpful
Report
Reviewed in the United States on June 21, 2024
Style: 21 OzColor: LupineVerified Purchase
I love the size and shape of this water bottle. There are so many colors to choose from that it is hard to make a decision. The double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours. The powder-coated exterior provides a solid grip and adds to the bottle’s overall durability. It also fits perfectly into the cup holder on my BMW X3. This is my second time around with this bottle. The first one still works but I have dropped it so many times that it wobbles a bit. A new one was in order! Do yourself a favor, and get several!
Customer image
5.0 out of 5 stars Fits under the water/ice dispenser of my refrigerator. Ice stays ice all day.
Reviewed in the United States on June 21, 2024
I love the size and shape of this water bottle. There are so many colors to choose from that it is hard to make a decision. The double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours. The powder-coated exterior provides a solid grip and adds to the bottle’s overall durability. It also fits perfectly into the cup holder on my BMW X3. This is my second time around with this bottle. The first one still works but I have dropped it so many times that it wobbles a bit. A new one was in order! Do yourself a favor, and get several!
Images in this review
Customer image Customer image
Customer imageCustomer image
3 people found this helpful
Report
Reviewed in the United States on April 2, 2024
Style: 21 OzColor: LupineVerified Purchase
This bottle comes with a manufacturer’s lifetime warranty. I’m thrilled. I absolutely love the Hydro Flask Stainless Steel Standard Mouth Water Bottle! It comes in a beautiful color, and its double-wall vacuum insulation keeps my beverages at the perfect temperature for hours. Whether I’m enjoying a hot coffee on a chilly morning or sipping ice-cold water on a hot day, this bottle delivers every time.

One of its standout features is its reliability – it doesn’t leak, even when tossed into a bag or backpack. The flex cap ensures easy access while preventing spills. Plus, its sleek design adds a touch of style to my everyday routine.

The only minor downside is that if I add carbonated drinks, there’s a risk of a fizzy fountain when opening the bottle. However, I believe this is a common issue with many similar products, and it doesn’t diminish the overall quality and functionality of the Hydro Flask bottle. Overall, I highly recommend it to anyone looking for a durable, stylish, and reliable water bottle.
Customer image
5.0 out of 5 stars Stylish and Functional, lifetime warranty: Hydro Flask Stainless Steel Standard Mouth Water Bottle
Reviewed in the United States on April 2, 2024
This bottle comes with a manufacturer’s lifetime warranty. I’m thrilled. I absolutely love the Hydro Flask Stainless Steel Standard Mouth Water Bottle! It comes in a beautiful color, and its double-wall vacuum insulation keeps my beverages at the perfect temperature for hours. Whether I’m enjoying a hot coffee on a chilly morning or sipping ice-cold water on a hot day, this bottle delivers every time.

One of its standout features is its reliability – it doesn’t leak, even when tossed into a bag or backpack. The flex cap ensures easy access while preventing spills. Plus, its sleek design adds a touch of style to my everyday routine.

The only minor downside is that if I add carbonated drinks, there’s a risk of a fizzy fountain when opening the bottle. However, I believe this is a common issue with many similar products, and it doesn’t diminish the overall quality and functionality of the Hydro Flask bottle. Overall, I highly recommend it to anyone looking for a durable, stylish, and reliable water bottle.
Images in this review
Customer image
Customer image
12 people found this helpful
Report

Top reviews from other countries

Alexis Jesus Gonzalez Biffano
5.0 out of 5 stars La botella perfecta
Reviewed in Mexico on June 4, 2024
Style: 24 OzColor: AgaveVerified Purchase
Botella ideal, altísima calidad.
Es una compra para toda la vida, yo amo esta marca.
Ashley
5.0 out of 5 stars Cool colour and good size
Reviewed in Canada on June 1, 2024
Gave as a gift and my friend now uses it as her main water bottle (she loves her water lol). Unique colour and she likes the strap part for attaching to bags.
Kyoko Fierro
5.0 out of 5 stars Good product
Reviewed in Canada on May 26, 2024
Style: 18 OzColor: AgaveVerified Purchase
Keeps the temperature well for a good length of time. Light and slim for carrying around as well as car cup holder placement.
Johanne Provencher
5.0 out of 5 stars Efficace
Reviewed in Canada on May 26, 2024
Style: 24 OzColor: CactusVerified Purchase
Elle garde l’eau froide très longtemps. C’est la meilleure gourde que j’ai eue.
Jesús
5.0 out of 5 stars Hace muy bien su trabajo
Reviewed in Mexico on May 24, 2024
Style: 21 OzColor: AgaveVerified Purchase
Esta botella mantiene muy bien la temperatura del agua y, de hecho, fué la principal razón por la cual la compré; sólo espero resista con el paso del tiempo.

Un detalle a considerar es que los primeros días tal vez se sienta un sabor metálico en la botella, pero después de lavarla un par de veces el agua mantiene su sabor natural y la experiencia se vuelve bastante agradable.

En lo personal me arrepiento de no haber comprado la versión de 24oz ya que la de 21oz no satisface al cien mis necesidades y las botellas de 30oz son muy gruesas para mi gusto. Trataré de comprar otra botella con otro tipo de tapa ya que al final estas pueden intercambiar haciendo más práctico todo.

Recomiendo esta botella si eres una persona cuidadosa, de lo contrario, ve por un Yeti mejor