To buy, select Size
Choose from options to the left

VIDEO

Image Unavailable

Image not available for
Color:

Hydro Flask Standard Mouth Water Bottle, Flex Cap - Multiple Sizes & Colors

by Hydro Flask

7,431 ratings

| 225 answered questions

Price:	$29.95 - $110.20

Color: Black

Newly produced Hydro Flasks do not feature a registered trademark symbol next to the logo
Keeps beverages cold up to 24 hours and hot up to 12 hours when using the lid
BPA-free and phthalate-free; 18/8 food-grade stainless steel
Small boot fits Standard Mouth Bottles and medium boot fits Wide Mouth Hydro Flask bottles
Lifetime warranty

What other items do customers buy after viewing this item?

Customers who viewed this item also viewed

Page 1 of 1 Start overPage 1 of 1

This shopping feature will continue to load items when the Enter key is pressed. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading.

Amazon's ChoiceCustomers also viewed these Amazon's Choice items

Page 1 of 1 Start overPage 1 of 1

Special offers and product promotions

Other Product Promotions:

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.

All Product Information Customer Q&A's Customer Reviews

Product Description


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 assurance against manufacturer defects. Visit our official website for more information.


Standard Mouth Flex Cap (Included) Moves with you. Strong yet flexible, the Standard Mouth Flex Cap is the perfect companion for spontaneous campouts, epic road trips, and everything in between. Made with stainless steel pivots and an easy-to-carry strap, this cap has Honeycomb Insulation to help keep your drinks cold for up to 24 hours or hot up to 12. Pair it with any of the Hydro Flask Standard Mouth bottles.	Standard Mouth Sport Cap Sip. Refresh. Go. From mountain trails to morning yoga class, the Standard Mouth Insulated Sport Cap lets you hydrate one-handed and on the fly. It’s the first insulated sport cap specifically designed to keep water in your Hydro Flask bottle ice cold, sip after sip. Sport Cap is not intended for use with hot liquids and is not leakproof.


	Hydro Flask 18 oz Standard Mouth w/ Flex Cap	Hydro Flask 21 oz Standard Mouth w/ Flex Cap	Hydro Flask 21 oz Standard Mouth w/ Sport Cap	Hydro Flask 24 oz Standard Mouth w/ Flex Cap
Volume	532 mL	621 mL	621 mL	710 mL
Mouth Diameter	1.91"	1.91"	1.91"	1.91"
Diameter	2.87"	2.87"	2.87"	2.87"
Height	8.7"	9.4"	10.4"	10.8"
Weight	11.3 oz	12 oz	12 oz	13.2 oz
BPA & Toxin Free	✓	✓	✓	✓
Fits in Vehicle Cup Holders	✓	✓	✓	✓
Leakproof	✓	✓		✓

Product details

Product Dimensions: 2.9 x 2.9 x 6.5 inches ; 8 ounces
Shipping Weight: 8 ounces (View shipping rates and policies)
ASIN: B07QNTYQL9
Item model number: S21ST001
Customer Reviews: 3,630 customer reviews
Amazon Best Sellers Rank: #19 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
- #2 in Water Bottles

Would you like to tell us about a lower price?

Customer Questions & Answers

See questions and answers

Customer reviews

3,630 customer reviews

There was a problem filtering reviews right now. Please try again later.

Roblen

I received a dirty, used product!

March 11, 2018

Size: 18 oz (532 ml) Standard MouthColor: CobaltVerified Purchase

I ordered a hydroflask from amazon a few weeks ago, and I loved it. Decided to order one for my mom as a gift. Today I received it, and it hard old coffee stuck inside and outside! So gross! I can’t believe amazon let this happen. Make sure you check the product before you give it to someone as a gift!

391 people found this helpful

Helpful

Comment

smuckj

Awesome. Nice grippy texture, convenient handle to swing it by, and sounds like a gong when it hits people in the head.

May 12, 2017

Size: 24 oz (710 ml) Standard MouthColor: CobaltVerified Purchase

Two weeks in and I'm loving it. Already traveled on a plane with it, took it to the beach, take it to and from work on my bike every day, and dropped it on the floor. I've never had an insulated bottle before so it's been regularly surprising how cold it keeps my water. I haven't achieved the 6/8+ hours of ice that some people claim, but I also don't use a lot of ice and often don't close the lid out of laziness. Part of the reason I got this one is because it has a flip-top straw sport lid, but I haven't bought it yet. I was surprised by how tall it was, but it needs to be to hold 24 ounces AND fit in cupholders (which it does easily) AND have a vacuum sealed insulated liner inside. I was especially surprised when I leaned forward to sit down after setting it on my desk and dropped my forehead right on top of the bottle. It's gotten a couple tiny knicks and slight scratches on the lid from general use, but that's to be expected. I love the coating on the outside. Easy to hold, never gets condensation due to the insulation, and seems to repel water even when it runs down the sides. Best part though: when you bump it on things it sounds like a low, subtle gong. I do it on accident (and purpose) all the time.

142 people found this helpful

Helpful

Comment

Steven

Quite disappointed. I thought the bottle would have better insulation ...

October 16, 2017

Size: 24 oz (710 ml) Standard MouthColor: WhiteVerified Purchase

Quite disappointed. I thought the bottle would have better insulation considering all of the great reviews and the high price tag but the ice was melting after just a couple of hours. On the bright side, there's no condensation.

Update: After using this bottle for a little over a week, the handle on the cap broke off... I can put it back on but it is no longer secure and I almost dropped it when it snapped. Considering I paid $35 plus tax for a high quality insulated bottle, I am extremely disappointed.

165 people found this helpful

Helpful

Comment

Purple Diva

You won’t regret it 🌸

February 10, 2019

Size: 24 oz (710 ml) Standard MouthColor: LilacVerified Purchase

I just received this. It actually came a day early. I have ordered many of these for my family. It is the best brand out there. The lilac is an amazing color. I took a couple of pix to show this. I’m definitely going to order more in the new colors. Buy it. You won’t regret it. It’s well worth the hefty price tag. 5 👍👍👍👍👍

59 people found this helpful

Helpful

Comment

Jobobl

Not what I ordered - Feels like they were trying to pull a fast one on me

November 27, 2018

Size: 24 oz (710 ml) Standard MouthColor: PacificVerified Purchase

I did two different orders of Hydro Flask water bottles, both from Tall Ridge. One came packaged like HydroFlask bottles do - with a paper sleeve around the bottle, in a nice cloth bag. The second one was NOTHING like what I ordered: it was a "kleen kanteen", not a HydroFlask, but there was HydroFlask paper sleeve around the bottle, covering up the "kleen kanteen" name. And the second one was not color I ordered either - I ordered blue and it was green. And it was scratched in several places.

39 people found this helpful

Helpful

Comment

Irving N Howe

Defective? Knockoff?

October 1, 2017

Size: 24 oz (710 ml) Standard MouthColor: BlackVerified Purchase

This is either a knock off or defective. I would be concerned about purchasing. Own two. Know to hand wash only, etc. First one was bought at REI. Holds ice all day. One from Amazon can't keep ice for two hours inside the house. Didn't want to believe but after testing is the case. Defective. But was a gift and given too late for return. Very disappointed. Had to be defective.

55 people found this helpful

Helpful

Comment

MaryC22

Once you get a hydro flask no other bottle compares!

August 31, 2017

Size: 21 oz (621 ml) Standard MouthColor: LemonVerified Purchase

They aren't lying when they say this keeps water cold for 24 hours. I didn't know what I was missing until I got this! Having ice cold water throughout my entire workouts/walks is amazing and having this by my bedside and waking up to fresh ice cold water is so refreshing and actually woke me up more. I definitely think I'm going to be purchasing more sizes in the future for different occasions! But the 21oz is honestly perfect to start and it's the perfect size of you need a bottle for exercising/walking. It's great for petite hands, it fits in cup holders in both cars, bikes and exercise machines. The color is super pretty and you can just feel how great the quality is. The cap it comes with really does keep it from leaking and the handle is very handy when going for walks. Going to pick up the sports cap soon for my more intense workouts! Highly recommend.

28 people found this helpful

Helpful

Comment

carmen pineda

Too expensive, poor quality

October 25, 2018

Size: 21 oz (621 ml) Standard MouthColor: CobaltVerified Purchase

This is my second hydro flask that has become dented in the first week of us using it. The bottles are not made of good quality and I was just advised by the vendors that dents,scratches are not covered by the lifetime warranty...so what is covered?? Bought a bottle for my other child about 6 months ago from local retailer for less than half the price of this one and is much sturdier, it has not dents and it has been dropped several more times.

23 people found this helpful

Helpful

Comment