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  • Hydro Flask 18oz Wide Mouth Water Bottle
  • Hydro Flask 18oz Wide Mouth Water Bottle
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  • Hydro Flask -
Hydro Flask18oz Wide Mouth Water Bottle

Item # HYF0015

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Item # HYF0015

18oz Wide Mouth Water Bottle

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

Reviews & Community


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Love these!

  • Familiarity: I've put it through the wringer

I own several in different colors - they are great for keeping drinks hot or cold - summer car travel, tea while skiing...and very sturdy and dependable. When I throw a water bottle into my bag or pack I need to know it won't leak! These come through with flying colors :)

Lasts forever

  • Familiarity: I've put it through the wringer

Great for travel and can keep your drinks hot or cold for a whole day with no problem.

Another one

  • Familiarity: I've used it several times

Had to get yet another size in the Hydroflask. This one is perfect for my water at work and awesome for taking the dog out for a hike.

Great Bottle

  • Familiarity: I've put it through the wringer

I have a few of these in different colors and just like most reviews on this, they just work. Excellent choice for drinks on the go and are very durable.

Love the Hydro Flasks

    I bought this one for my wife and turned around and bought another one for the kid. They both like the flip up straw lid and I prefer the flip top. Any of the wide mouth lids will work with it.


    • Familiarity: I've put it through the wringer

    es el mejor thermo que he comprado en mi vida!

    So Many Fun Colors!

    • Familiarity: I've put it through the wringer

    I gave this as a gift to a friend. Here's what he has to say:

    "Having a water bottle that is durable, keeps things cold or hot all day long and doesn't sweat is very important in the medical field. Hydro Flask is that water bottle. I can put ice in it at 6AM and by middle of the afternoon I'm only refilling water and not the ice. I've been able to keep coffee hot a for 12 hours. It's truly the most versatile water bottle and it also comes in all sorts of fun colors."

    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.