Hydro Flask 24oz Standard Mouth Review

The Hydro Flask 24oz Standard Mouth has been my everyday hydration companion since July 2022. No kidding or exaggeration, I’ve been using this water bottle every single day ever since I bought it. In this post, I’m collecting all the product details that can influence your decision to get this bottle or not, all the pros and cons, and I’m sharing my no-bullsh*t personal opinion too.

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Review Summary

Hydro Flask Standard Flex Cap Black 24 Oz
23,343 Reviews
Hydro Flask Standard Flex Cap Black 24 Oz
  • 24 hours cold, 12 hours hot
  • TempShield️ double-wall vacuum insulation
  • Leakproof when closed

Pros đź‘Ť

It’s a durable, stylish, stainless steel bottle with a comfortable and firm grip. It holds and keeps cold just enough water for my everyday needs.

Cons đź‘Ž

It is not a lightweight product, some lid types are not fully leakproof, and it can be a bit pricey.

Overall ❤️

It’s a reliable and sustainable choice for anyone who is looking for a reusable, high-quality water bottle with a sleek design. I’ve been using mine for almost 2 years now, and I’m not thinking about buying a replacement of any kind, anytime soon. I changed the original straw lid to an alternative, not official Hydro Flask product, but other than that, the brand made me a fan for life. I’m very satisfied with my 24 oz Standard Mouth.

my Hydro Flask 24oz Standard Mouth "Laguna"
My Hydro Flask 24oz Standard Mouth “Laguna” with an alternative “Bottle Bottle” cap.

All The Nitty Gritty


24 fluid ounces (oz). A standard glass of water is typically considered to be 8 oz. Therefore, a 24 oz water bottle would be equivalent to 3 standard glasses of water. Individual hydration needs can vary based on factors such as age, sex, weight, activity level, and climate. It’s best to listen to your own body (or consult with a healthcare professional for personalized recommendations) to stay adequately hydrated. I fill my 24 oz bottle three times a day, and it keeps me rollin’ just fine.


11.28 ounces (320 grams). To compare, a 25 oz tritan plastic water bottle can weigh only 0.361 ounces (10 grams). Consider the additional weight of the water in it too. If you travel / backpack light, you might want to look further.


‎2.8 x 2.8 x 10.8 inches. It’s not as bulky as the bigger Hydro Flasks, easy to carry around.


18/8 pro-grade, rust-resistant stainless steel. I don’t put anything else but water in it, but it always tastes pure and fresh, nothing funny in the bottle. No flavor transfer from the cleaning products or anything. The lids are BPA-free plastic.


Hydro Flask has a reputation for durability. Well, it didn’t take long to get a dent. But it’s very small, hardly visible as the image tries to show, and only one after almost 2 years of everyday use.

And: no scratches! I carry it around wherever I go, so it has plenty of opportunities to get dropped – which indeed happened more times I care to count – and it still looks like new.

So, it might be strong to say it’s “practically indestructible”, but I do believe this is a very sturdy water bottle.


TempShield™ double wall vacuum insulation. Keeps drinks cold up to 24 hours, and hot up to 12 hours. To be honest, I’ve never kept my drink in it for up to 24 hours (it’s my everyday bottle, I keep refilling), but I can tell you, if I put cold water in it, I drink cold water hours later too. Especially if I add some ice cubes as well. I haven’t tried with anything warm yet, but I trust their claim about the 12 hours.

Mouth opening

Standard mouth. It has plenty of room for loading ice or using a bottle brush.

Lid type

I didn’t hear good things about the Sport Cap (rumor has it it’s not leakproof), so I bought my bottle with an original Hydro Flask Standard Mouth Flex Straw cap. Frankly, I didn’t like it. Even though it offered Honeycomb Insulation for maximum temperature retention, I just couldn’t get used to the sipping. I wanted bigger gulps. (And it happened that I forgot it was a straw lid, lifted the bottle to drink, and spilled water all over through the tiny hole on the cap…) The Flex Cap didn’t seem to be very convenient, and their Chug Lid was for the wide-mouth bottles.

I understand if hardcore Hydro Flask fans hate me for my solution. It’s not an official Hydro Flask accessory after all, but it does the job perfectly for me:

BOTTLE BOTTLE Flip Top Lid Replacement Cap for Hydro Flask 12 OZ, 18 OZ, 21 OZ, 24OZ Water Bottle Portable Carrying Loop Handle HydroFlask Lid
  • SIZE Fits the 12 oz,18 oz, 21 oz, 21 oz and 24oz,...
  • EASY TO CARRY - Portable handle loop for...
  • LEAK PROOF - One-click open allows for one-handed...

Closure mechanism

Twist to open. Twist to close. Easy. Also, it ensures a tight seal every time, preventing leaks even when just jostled in my tote or a backpack.


When closed. (Not all lids are proven to be 100% leakproof though.)


Yes, even with ice in it, it doesn’t sweat. Thanks to the TempShield™ that prevents condensation.

Grip and texture

The slim design gives a really good grip, and so is the powder coat. To me personally, it felt a little bit weird to touch the surface layer at first, it feels a bit like sand, but now I know from experience that it helps a lot to hold my bottle steady even with a sweaty palm. Win.

Design and style

It’s slim and minimal. Just what I like. Did you know that you can design your own Hydro Flask? Check this out: https://www.hydroflask.com/shop/customize

Color options

Multiple. I sport a “Laguna” but there are 10+ different, vibrant colors available.

Carrying handle

It’s a small yet impactful detail of a water bottle. It makes it easy to grab and go. The Hydro Flask has it on the lids, not on the bottle. They also offer packable bottle slings as an accessory.

Cupholder compatibility

The base diameter of the bottle is ‎2.8 inches. It fits in the standard car-size cup holders (which range from 2.5 inches to 3.5 inches in diameter), excluding the smallest cup holders in some vehicles.

Ease of cleaning

The standard mouth allows easy cleaning with a bottle brush, however, I usually just use cleaning tablets which makes it a breeze. The Sport Cap and Flex Straw cap might need a special brush for thorough cleaning.


It’s supposed to be dishwasher safe, but I personalized mine with a sticker, so I never put the bottle in the machine. I washed the cap once or twice on the top rack, and it was fine.

If you’re looking for something dishwasher safe, check out this post with a list of products you can machine wash: Can You Wash Water Bottles In The Dishwasher?


No. Just no. (Don’t put it on the stove or in the oven either.)


The fridge would be OK, but don’t put it in the freezer.

Carbonated drinks

Nope, it’s not intended for use with carbonated beverages. If you want to keep bubbles in your bottle, check out my other post: Best Water Bottle For Carbonated Drinks

Special features

Fits with most backcountry water filters. (I have not tested this yet.)

Price range

It starts around $40 and the price goes up with the accessories of your choice. I paid around $60 at the end for the bottle with a flex straw cap and a protective silicone boot. It is worth every $ if you ask me.

Environmental impact

As Hydro Flask’s corporate responsibility manifesto says:

We’re committed to making contributions to the aspirational goal of a circular economy through reusable products, material choices and smart packaging. We design for the environment to eliminate single-use products and to reduce waste.

I believe them. It’s an eco-friendly choice to use Hydro Flask bottles.


They offer the Hydro Flask Let’s Go!™ Promise: Product Warranty.

It’s a limited lifetime warranty against the manufacturer’s defects for the life of the product.

Customer reviews and ratings

More than 2600 customers rate it 4.7 on Amazon.com.

Customer support

I haven’t had to contact them yet, but they are just and email or phone call away, and I heard really good things about their service.

Additional accessories

Plenty. Caps, boots, slings, straps, and pouches. Check them all out: here.

Comparable brands

Several brands offer high-quality insulated water bottles with various features like Hydro Flask, to name a few: Yeti, Klean Kanteen, Iron Flask.

While these brands share similarities, individual preferences may dictate which one is the best.

Alternative products

Conclusion: Hydro Flask 24 oz Standard FTW

In my journey with the Hydro Flask 24 oz Standard Mouth, it has proven to be a stylish, durable, and reliable everyday companion. I wouldn’t trade it for anything. Yes, it might be a bit pricy, but the quality and peace of mind it provides me make it worth every $. So, if you’re looking for your next hydration sidekick that goes the extra mile, this water bottle has my enthusiastic stamp of approval.


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