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Hydro Flask

Hydro Flask Water Bottle - Insulated Stainless Steel - Non Spill, Leakproof in 21 Oz Lupine

Based on 568 reviews
Condition: New
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$51.24

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Nov 18
Order within 4 hours and 34 minutes

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At a glance

Condition
New
Style
21 Oz
Color
Lupine
Model
S21SX474
Capacity
1.3 lb
Weight
13.44 oz
Material
Stainless Steel
In the box
Standard Mouth Flex Cap Bottle

Features 10

  • 24 hours cold, 12 hours hot
  • TempShield double-wall vacuum insulation
  • Leakproof when closed
  • Pure taste, no flavor transfer

Description

Stainless steel, cupholder compatible, fits anywhere—the compact, reusable, refillable Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for quick adventures.

Specs 23

Brand Hydro Flask
Capacity 1.3 pounds
Color Lupine
Recommended Uses For Product Water
Special Feature Straw, dishwasher safe straw double wall leak-proof insulated leak-proof leak-proof
Brand Name Hydro Flask
Age Range Description Adult
Model Name Standard Mouth Flex Cap Bottle

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Favorite water bottle.
Size: 21 Ounces Color: Lupine
Review Image by Maria
Easy to carry everywhere ( work, home, gym, on the go ). Love the color and how it keeps the water cold after hours of adding ice. I can’t drink water that is room temperature, even in the cold I have to add ice. Does not leak and I love the big opening. I’m not a fan of water bottles with straws or sip straws or other openings where barely any water comes out or you have to suck on it for the water to come out. I think this opening helps me drink a lot more water. And I like to refill it more than my 32oz, but it has been helping me a lot with my water intake. It is easy to wash. I also take it with me to the gym and fits in every cup holder that the machines have for your bottle. With my 32oz I have gotten some of them stuck in the cup holder or with 64oz I have to leave it right next to the machine. But with this one it is easy to take a quick sip or long sip. It is easy to open and close. I just bought another one in the other shade of purple because I am obsessed with it. Definitely a perfect replacement for your water bottles ( lost 2, and broke 1 ) and over other good brands this is so far my favorite. Highly recommend it, worth the price! ... show more
Reviewed in the United States on November 29, 2024 by Maria
Hydro flask 21oz
Size: 21 Ounces Color: Lupine
Review Image by Lax
wow I have been using it for more than 1year now. quality is absolutely smazing. Water is hot and cold per their setup. definitely worth it for money I paid,I am happy it is working very good.
Reviewed in the United States on November 10, 2025 by Lax
Fits under the water/ice dispenser of my refrigerator. Ice stays ice all day.
Size: 21 Ounces Color: Lupine
Review Image by V Leicester
Review Image by V Leicester
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! ... show more
Reviewed in the United States on June 21, 2024 by V Leicester
Good water bottle.
Size: 21 Ounces Color: Lupine
NICE SIZE. VERY PRETTY COLOR. PRETTY CUTE. GOOD TO HOLD. I LIKE THAT IT DOESN'T COME WITH A STRAW OPENING BC IT WILL BE EASIER AND FASTER TO CLEAN. ORDERED IT FOR WORK SO THAT I CAN HAVE COLD WATER READY AND AVAILABLE.
Reviewed in the United States on November 8, 2023 by Janet
Stylish and Functional, lifetime warranty: Hydro Flask Stainless Steel Standard Mouth Water Bottle
Size: 21 Ounces Color: Lupine
Review Image by Catherine
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. ... show more
Reviewed in the United States on April 2, 2024 by Catherine
Really keeps my drink cold
Size: 21 Ounces Color: Lupine
I got the purple one it’s cool. I dropped it on the ground now it gots a little dent Ian the bottom tho. I surprised it dented so easily since it wasn’t that far off the ground. It’s really good at insulating, I had ice water in there over night and I still had ice in it.
Reviewed in the United States on November 29, 2023 by Shar
Love this for the gym
Size: 21 Ounces Color: Lupine
I need ice water at the gym. I fill it with ice water going out and it stays good for hours. I can even refill a couple times from fountain and the ice lasts till after get home. The color is great and it is slim enough to fit in pocket on my gym bag.
Reviewed in the United States on September 1, 2024 by clean clothes
Beautiful and functional Hydro Flask
Size: 21 Ounces Color: Lupine
I love the design of this Hydro Flask—it fits perfectly in my car’s cup holder, and the size is just right for my daily needs. The simple screw-top lid is a big plus, making it easy to clean without the extra hassle of removing a straw or mouthpiece.
Reviewed in the United States on May 23, 2025 by TropicalReef
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