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2018 Road Bike Buyer’s Guide

Hydro Flask 18oz Wide Mouth Water Bottle


Item # HYF0015

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  • Cobalt, One Size ($29.95)
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Item # HYF0015



Hydro Flask's insulated, stainless steel 18oz Wide Mouth Water Bottle is ideal for anything from warm hikes to cold ski tours, and especially hot yoga classes. TempShield technology keeps water ice-cold for up to twenty four hours, and it keeps hot drinks toasty for up to six hours. Hydro Flask updated this year's model with a flexible loop on the wide mouth cap for long-lasting convenience.

  • Pro grade stainless steel
  • TempShield double insulation
  • Flex cap
  • BPA-free

Tech Specs

18/8 stainless steel
18 fl oz
Recommended Use:
casual, hiking
Manufacturer Warranty:

Reviews & Community


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Pure Awesomeness!

  • Familiarity: I've put it through the wringer

We use these for everything! I think we are going to replace all the cups/ drinkware in the house with hydro flasks.

-Glass of warm milk on the go.. sure grab the Hydro flask!
-Beer? What’s in here ice cool PBR or Hoptimus Prime? It doesn't matter when it’s in Hydro flask duh...
-Mixed drinks? johnny walker on the rocks? homemade potato vodka? And even Mimosas... Yep whatever bro it’s going in the hydro flask.
-Coffee? 3 day old by the camp fire brewed dirty engine oil black MJB that tastes almost certainly as if it was filtered with a dirty old sock, or your Grande, iced, sugar-free, vanilla Latte with soy milk and caramel drizzle? Yeah man put it in the Hydro flask.

EWWW GROSS!! What is that clear stuff he is drinking? Some sort of energy drinking or something? Yep just the best energy drink on the planet... Did you know that you can even put water in these things?!? It’s fantastic!

Yep I can see it now; I will have all the kitchen cabinets full of them soon. You know you can even eat soup and ramen noodles from these.

Only The Best

  • Familiarity: I've put it through the wringer

Perfect for car travel to social hangouts, great for everyday use! Its nice to drive a few hours reach for a drink and still have something Ice Ice Cold!

love it

  • Familiarity: I've used it several times

Perfect and worth every penny. Keeps my water cold . Love how it looks too!
one more for my collection.

So dainty!

  • Familiarity: I've used it several times

Perfect size for kid's water or mom's coffee! Love it.

Works impossibly well!

  • Familiarity: I've put it through the wringer

Keeps cold drinks cold in hot weather and hot drinks hot in cold weather much longer than you would expect. Wide opening makes it easy to clean.

Awesome Bottle

  • Familiarity: I've put it through the wringer

They come in nice colors, are totally bombproof, and keep your hot hot and your cold cold for a looong time. Almost too long honestly, but thats a good problem to have!

Perfect for mountain adventures

    I use this for warm drinks on long mountain adventures. Nothing better than getting to the top of a peak with your drink the same temp as when you left the house.

    All shapes and sizes

    • Familiarity: I've put it through the wringer

    This is our 9th hydroflask that we have owned and it is a great addition! Perfect amount of water to bring to work for the day along with a cup of joe in your 12 ounce version. Everyone is different in terms of water intake, but we found the 18 ounce to be the best size against both the 16 and 20 ounce options. Ice will not melt for a good 12 hours with cold water.

    Awesome Bottle!

    • Familiarity: I've put it through the wringer

    I have been very happy with all my Hydroflask products, and this one is no different. Will always keep your drinks cold!

    Classic Stainless- this time....

    • Familiarity: I've put it through the wringer

    Adding another one to the collection. This time i got the stainless steel version instead of going with a color version. i like the screw top lids more than the straw lids because I feel like hyrdoflask hasn't perfected the straw lid yet. On an less important note- stickers seem to stick better to the stainless version better than the colored versions.


      I have several for different occasions. This one tends to keep ice even longer because you don't open it up and let a bunch of hot air in every time you get a drink. I have filled this with ice water, left it in my car in the burning sun all day and not melted the ice. This thing is amazing!!!!

      If you have any questions about this bladder or any other gear shoot me an email at or give me a call at 801-523-4053

      Ice Cold Beverages!

      • Familiarity: I've put it through the wringer

      What is there to say about Hydro Flask that people don't already know?! It keeps beverages cold for hours, the look of the bottle is trendy and it's basically indestructible.

      I'll take this bottle on a hike and leave it in the car to come out to an ice cold drink with the ice still in there! You can literally never gone wrong with any of Hydro Flask products!

      Drink Water Feel Good

      • Familiarity: I've put it through the wringer

      This water bottle is awesome. It always amazes me when I leave ice in the bottle and wake up the next morning to still find ice in my water! Couldn't ask for any more, hydro flask does not disappoint

      Great GIFT!

        helping people stay cool and hydrated this hot summer weather.
        i bought the stainless steel color, it looks GREAT!

        Kid tested water approved

          I love my hydro flask its my favorite vessel for h20. It is also my 1-year-old son’s favorite tool for banging on the kitchen floor at 6am. As its metallic ring pierces through the sleeping household, I’m reminded how much I Love. My. Hydro Flask.

          Unanswered Question

          Does it fit in a standard water bottle holder?

          Perfect for car travel

          • Familiarity: I've put it through the wringer

          Fits in cup holders great so you don't have to worry about it on the drive to work. I purchased the flip lid to go with it to make drinking coffee on the go easy and mess free.

          Hot Hot and Cold Cold

          • Familiarity: I've put it through the wringer

          This water bottle is sweet! looks good, and keeps hot drinks hot and cold drinks cold WAY longer than any other bottle I have ever used. Worth the investment!