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Hydro Flask Vacuum Insulated Stainless Steel Water Bottle Wide Mouth with Straw Lid (Black, 40-Ounce)

4.8 4.8 out of 5 stars 1,387 ratings

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Brand Hydro Flask
Capacity 2.5 Pounds
Color Black
Special Feature Bpa-free

About this item

  • DESIGN IN MIND: With it's easy-access wide mouth, the sleek design holds the same volume of liquid as other leading water bottle brands. Also, safety is top-of-mind, as the bottles are made out of non-toxic BPA-free plastics & 18/8 food-grade stainless steel.
  • SLIP-FREE GRIP: Unlike other leading water bottles, Hydro Flask has a powder coat, which gives you a solid grip. The Powder Coat works with the premium TempShield insulation, which prevents condensation from forming on the outside of the bottle, to give you exactly what you want in an everyday refreshment delivery system.
  • JUST THE RIGHT SIZE: Meets your everyday hydration needs in one container, all while keeping it piping hot or ice cold and fitting comfortable and conveniently in your hand or your vehicles' cup holders. The wide mouth aspect also fits most backcountry water filters.
  • INSULATION INNOVATION: The double-walled, vacuum insulated TempShield Insulation, the same technology used in all Hydro Flask products, will ensure that your beverage of choice maintains its temperature for many hours to come. Hot drinks up to 6 hours, and cold drinks up to 24 hours.
  • DRINK IT IN: The durable Wide Mouth Straw Lid lets you add perfect sipping to all your outdoor adventures. It works with all Wide Mouth bottles and, thanks to the handy finger loop, you can clip your favorite Hydro Flask to your pack. Please note that the Wide Mouth Straw Lid is not leak-proof.

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$54.95
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Sold by Wheels Plus More and ships from Amazon Fulfillment.
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$9.95
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Sold by Flaskars Inc. and ships from Amazon Fulfillment.
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$49.95
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Product Description

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TempShield Technology

Colder. Hotter. Longer.

Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.

Pro-Grade Stainless Steel

Pure and refreshing. Every time.

Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer — and the durable construction stands up to whatever life brings.

Proprietary Powder Coat

Comfortable and durable.

Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.

Hydro Flask Pledge

We stand behind our products.

All new purchases from authorized Hydro Flask retailers come with a limited lifetime coverage against manufacturer defects. Visit our official website for more information.

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Wide Mouth Compatible Lids

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Wide Mouth Flex Cap

Insulated, flexible, and built to last.

Bike rides along the beach or snowshoeing in the backcountry — it’s easy to stay hydrated on the go with our Wide Mouth Flex Cap. Designed with stainless steel pivots and a flexible strap, this cap moves when you do. Plus, it’s made with Honeycomb Insulation to keep drinks cold up to 24 hours or hot up to 12 — no matter what the weather’s doing outside.

Wide Mouth Straw Lid (Included)

Drink it in.

Our durable Wide Mouth Straw Lid lets you add perfect sipping to all your outdoor adventures. It works with all Wide Mouth bottles and, thanks to the handy finger loop, you can clip your favorite Hydro Flask to your pack. 2 durable rubber straws included.

Please note that the Wide Mouth Straw Lid is not leakproof and is not intended for use with hot liquids.

Hydro Flip (Wide Mouth)

Flip and sip.

Whether you’re on the trail or the chair lift, our Hydro Flip Lid makes it easy to sip lattes and hot chocolate on the go.

Please note that the Hydro Flip Lid is not leakproof.

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Hydro Flask 18 oz Wide Mouth w/ Flex Cap Hydro Flask 32 oz Wide Mouth w/ Straw Lid Hydro Flask 40 oz Wide Mouth w/ Straw Lid Hydro Flask 64 oz Wide Mouth w/ Flex Cap
Customer Reviews
4.7 out of 5 stars
2,244
4.8 out of 5 stars
1,387
4.8 out of 5 stars
568
Volume 532 mL 946 mL 1,180 mL 1,900 mL
Mouth Diameter 2.28" 2.28" 2.28" 2.28"
Diameter 2.91" 3.56" 3.56" 4.7"
Height 8.1" 9.1" 10.4" 10.4"
Weight 11.6 oz 15.5 oz 17.5 oz 32.1 oz
BPA & Toxin Free
Fits Most Backcountry Water Filters
Fits in Vehicle Cup Holders

Product information

Technical Details

Additional Information

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Hydro Flask Vacuum Insulated Stainless Steel Water Bottle Wide Mouth with Straw Lid (Black, 40-Ounce)


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Customer reviews

4.8 out of 5 stars
4.8 out of 5
1,387 global ratings

Customers say

Customers like the value, size and coldness of the thermos. For example, they mention it's well worth the money, keeps the water cold all day and that the ice lasts all day. Customers are also impresseded with the quality, saying it'll last a long time and is excellent. That said, some complain about the damage and leakage.

AI-generated from the text of customer reviews

160 customers mention135 positive25 negative

Customers like the quality of the bottle. They say it's a great product that holds temperature all day long. Some customers also mention that it'll work great without any issues. Overall, most are satisfied with the quality and functionality of the product.

"This bottle is great! I got the 40oz to keep me hydrated throughout the day and man does it keep the drink cold!..." Read more

"...It’s easy to carry and it’s just a overall cool looking product! However, I had a very strange experience the first time I ordered my hydro flask...." Read more

"...I love that it actually works and I don’t have to worry about refilling or having warm water...." Read more

"Functionality wise, works great. Holds temperature all day long.Sturdiness wise, it’s rather flimsy...." Read more

150 customers mention134 positive16 negative

Customers like the coldness of thermos. For example, they mention it keeps the water cold all day and doesn't have any issues with leaking. They also say the ice lasts all day without having a weird taste.

"...the 40oz to keep me hydrated throughout the day and man does it keep the drink cold!..." Read more

"...water bottle from this brand for 6 years and it still keeps my drinks ice cold I take it mostly to festivles I leave it in the car full of ice water..." Read more

"Love love love my hydro flask! Keeps my water cold all day long. It’s easy to carry and it’s just a overall cool looking product!..." Read more

"...find myself drinking even more water than usual since it keeps the water cold for over 8 hours...." Read more

40 customers mention29 positive11 negative

Customers like the value of thermos. They say it's well worth the money, the best bottle they've tried, and the best price.

"...bottle but the smile on his face when he realized it’s a great bottle was all worth it. Totally recommend buying!..." Read more

"...Especially high quality h20 so definitely worth every penny." Read more

"...It's worth the price!!" Read more

"...It is however very expensive for a water bottle and there have been many companies coming out with similar products for a more affordable price...." Read more

24 customers mention19 positive5 negative

Customers like the size of thermos. For example, they mention it's a great size, holds a lot, and is the perfect size for a male. Some say the bigger container is perfect to bring to the office or when out, and it keeps drinks cold. That said, most are happy with the size and fit of thermoses.

"...This has become a must-have for my life.Pros -1. Large capacity - This will take a quart of water and a cup of ice.2...." Read more

"...in the beginning, it kept my water cold all day and due to its large size it didn’t require frequent fillings...." Read more

"...They are awesome. I own over 25 of their products. Various sizes, water, beer, cocktails, food. What is not to like...." Read more

"...The size was also a little smaller than his which was weird because we both ordered the same size. It almost looked like a knock off...." Read more

17 customers mention17 positive0 negative

Customers find the thermos easy to use. They say it's convenient, simple yet sufficient, and helps them drink more water. Customers also appreciate the cleanness and simplicity of the bottle. Overall, customers are happy with their purchase and recommend it to others.

"I’ve been using this for the past few days and it easily helps me drink more water as it keeps the water ice cold...." Read more

"I love my HydroFlask, keeps my water cold all day, it’s so convenient...." Read more

"...really write reviews guys but This hydro flask really works and is convenient. It keeps my ice intact for 2-3 days...." Read more

"...Cutting down on water bottle consumption drastically. Easy to use, easy to clean. Would definitely buy again." Read more

15 customers mention11 positive4 negative

Customers like the ease of cleaning thermos. They mention it's durable, easy to clean, and keeps drink cold for hours.

"...3. Easy to clean - The closure, when open, provides almost a straight shot to the straw attachment tube, so you can easily clean this with a small..." Read more

"...Beautiful design, easy to clean, and keeps liquids cold." Read more

"...They are very durable and easy to clean. The smaller 24 oz containers are harder to put ice into, but the 40 oz has a larger mouth...." Read more

"...It sucks!! It gets so dirty and hard to clean so I end up buying new lids for it ever other month. But it is a great water bottle" Read more

49 customers mention16 positive33 negative

Customers are mixed about the leakage of thermos. Some mention it's sturdy and does not leak, while others say that it does leak a little. The straw cap keeps on leaking, and the bottle started to lose its seal. When the bottle is on its side, condensation collects on the lid, and air is blown in instead of liquid.

"...for this particular 40oz bottle with straw lid states that it isn't leak proof...." Read more

"...years now and it has a couple dings (adds character) but no leaks keeps my water cool and perfect for hikes...." Read more

"...i also noticed it leaked a bit when not sitting up right but nothing major. other than that i absolutely love this bottle!" Read more

"...get it going it’s only going as designed, even so it will leak on you when drinking especially and a few drops if shaken with top closed even, and..." Read more

20 customers mention5 positive15 negative

Customers are dissatisfied with the damage of thermos. They mention that it can dent or peel, and the coating cracks and dents if dropped. They also say that it scratches easily and has several chips and stains in the coating.

"...but i dropped the hydroflask once on concrete and it now has quite a few little dents and the plastic on the cap got pretty chewed up...." Read more

"...worst part is it put a HUGE dent in the side of the bottle and scratch the paint off, but it doesn’t effect how well it works and how cold it keeps..." Read more

"...if not longer. He's dropped it a few times and no dents or scratches yet" Read more

"...for me and the cons are the lid and the fact that the coating cracks and dents if dropped and the high price tag." Read more

I love my hydroflask!
5 Stars
I love my hydroflask!
I love my 40 oz hydroflask! I'm not gonna lie I was a little scared at first to purchase one due to some of the negative reviews on here for ex. they may be fake or do not stay cold for more than a few hours. Let's just say I took a leap of faith:) My hydroflask purchased on Amazon - *Amazon's Choice* the print on mine seems pretty clean to me, the cap is a straw cap not a flex cap (frequently purchased together section had the straw lid as one of the items so naturally I questioned what I'd be getting) there's no need to buy one if that's what you're wanting comes with one straw attached to cap and one extra. The straw hole is smooth doesn't feel uncomfortable on my lips and I've tested mine before actually using it just in case (w/ 3/4 ice then filled with water) it lasted 24+hrs and I'm sure it would of lasted a lot longer due to the size of remaining ice cubes but no water lasts that long in my bottle anyways buuut since I paid for 24hrs that's all I cared to test. Oh and comments on lid: I also read in other comments that the straw lid makes funny noises. I too experienced this but once I put the straw back down in closed position to adjust the suction it no longer made noises. Hope this helps:)For convenience the handle on my hydroflask is a ("WaterFit - Best Paracord Handle" in the color: purple/blue) also a *Amazon's Choice* item.
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Reviewed in the United States on May 28, 2019
4 people found this helpful
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Reviewed in the United States on October 8, 2023
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Reviewed in the United States on March 14, 2019
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CM
5.0 out of 5 stars I love my hydroflask!
Reviewed in the United States on March 14, 2019
I love my 40 oz hydroflask! I'm not gonna lie I was a little scared at first to purchase one due to some of the negative reviews on here for ex. they may be fake or do not stay cold for more than a few hours. Let's just say I took a leap of faith:) My hydroflask purchased on Amazon - *Amazon's Choice* the print on mine seems pretty clean to me, the cap is a straw cap not a flex cap (frequently purchased together section had the straw lid as one of the items so naturally I questioned what I'd be getting) there's no need to buy one if that's what you're wanting comes with one straw attached to cap and one extra. The straw hole is smooth doesn't feel uncomfortable on my lips and I've tested mine before actually using it just in case (w/ 3/4 ice then filled with water) it lasted 24+hrs and I'm sure it would of lasted a lot longer due to the size of remaining ice cubes but no water lasts that long in my bottle anyways buuut since I paid for 24hrs that's all I cared to test. Oh and comments on lid: I also read in other comments that the straw lid makes funny noises. I too experienced this but once I put the straw back down in closed position to adjust the suction it no longer made noises. Hope this helps:)

For convenience the handle on my hydroflask is a ("WaterFit - Best Paracord Handle" in the color: purple/blue) also a *Amazon's Choice* item.
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Reviewed in the United States on January 30, 2019
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5.0 out of 5 stars CHECK FOR KNOCK OFF PRODUCT!!!
Reviewed in the United States on January 30, 2019
Love love love my hydro flask! Keeps my water cold all day long. It’s easy to carry and it’s just a overall cool looking product! However, I had a very strange experience the first time I ordered my hydro flask. My boyfriend ordered this exact product (color/size) a few days before I ordered mine and his came in a dust bag with a label and two straws. When I ordered mine a few days later (from the exact same seller) it looked a little different. It didn’t come with a dust bag or lable and it only came with one (very flimsy) straw. The size was also a little smaller than his which was weird because we both ordered the same size. It almost looked like a knock off. I returned the product and ordered again hoping that the second one would be better. The second one I ordered was legit and came with a label, dust bag and an extra straw. So make sure you check your hydro flask when you receive it.
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6 people found this helpful
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Reviewed in the United States on October 2, 2018
2 people found this helpful
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Reviewed in the United States on December 13, 2017

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Aaron Campbell
5.0 out of 5 stars 🤙
Reviewed in Canada on June 13, 2019