Kool8 - Your Fully insulated, Durable & Eco-friendly water bottle

$42.99 $34.99
$42.99 $34.99
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Your next-gen stainless steel water bottle to take everywhere. Perfect to keep your cold drinks cold and warm drinks warm, the leak-proof Kool8 water bottle helps you stay alert and refreshed throughout your day.


Water, tea, coffee, iced macchiatos - whatever your drink of choice, Kool8’s double wall vacuum insulation safeguards the temperature. Condensation-free.


The durable Kool8 stainless steel metal water bottle stands up to wear and tear to keep your bottle looking like new, longer.


At 18 oz. this small water bottle won’t weigh you down, and fits easily in virtually any bag.



Keeps your drinks tasting great, wherever you go.

Strong as steel

Minimize dents and scratches to your water bottle with Kool8’s stainless steel construction.

Temperature controlled

Double-walled vacuum insulation keeps your favorite drinks cold or warm for 12+ hours.

Leak free

'Nuff said.


Why limit your water bottle to only water? Use Kool8 to carry your favorite tea, coffee and more.

Socially conscious

Drink well, do good. We donate 20% of all profits to bring clean water to those in need.

The perfect fit

Toss your Kool8 water bottle in almost any gym bag, backpack or purse. Wherever you go, Kool8 fits right in.

Product details

  • Dimensions: 12.4 in x 2.55 in
  • Weight: Up to 18 oz./500 ml
  • Extras: Tea infuser (included FREE)
  • Colors: [Slate] Gray, [Fiery] Red, [Mint] Green
  • Warranty & Support
  • Free exchanges up to 6 months after purchase.
  • 2.55 in

    12.4 in


    Processing time All orders are processed within 24-48 hours max.
    FREE US shipping Kool8 offers free US shipping on all orders
    Expediated shipping For $10 extra, you can get the Kool8 bottle delivered in 48 hours
    International shipping Contact us at [email protected] if you live outside of the US. We do ship international. Additional shipping fees apply


    5 / 5 out of 24 reviews

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  • 5 out of 5
    Chris Frontiere
    Great stuff. Love the design. Dropped it on my kitchen tiles - bottle was intact!
  • 4 out of 5
    Kate Klein
    I bought this water bottle so I can drink more water now that I'm pregnant. My friend had one so I got to "test it out" before buying. So far, it's been great. The bottle is exactly as advertised no BS marketing or unexpected surprised. 5 stars from me.
  • 4 out of 5
    Roberto Ramirez
    I finally got my Kool8 bottle in the mail. First off - kudoz to the team. The box design is super nice. And the hashtag "Glad to be with you" is sweet. I live in San Diego. So I was skeptical that this bottle can do what it claims. I put water with ice in the bottle and left it outside on my balcony for 5 hours at 72 degrees. After 5 hours, the ice had not melted yet. So yeah, very good stuff.
  • 5 out of 5
    Adam G
    I really like green bottle. It's on the smaller side and it fits perfectly in my car's cup holder. Nice touch with the tea strainer.
  • 5 out of 5
    Quinn Lloyd
    I don't usually leave reviews, because I'm busy with 2 toddlers and a dog. But I felt I should spend 1 minute and tell everyone that this bottle always keeps my drink hot or cold. And that my girlfriends always joke of stealing it instead of coming to this website and buying the freaking bottle for themselves.
  • 5 out of 5
    Isabella Bates
    This is the fifth Kool8 bottle I bought. And I love it. I really hope my kids stop losing them.
  • 5 out of 5
    Harley Bowers
    I have to imagine that 90% of the people who buy a water bottle are like me. The Koo8 stainless steel water bottle is on my remote desk almost 100% of the time. For that purpose, this bottle is perfect. I make myself a nice coffee in the morning and it never gets cold - of course, that's because i finish drinking it within 3-4 hours. Buy the red version - that's my favorite.
  • 5 out of 5
    Leah Dawson
    Love the bottle.
  • 3 out of 5
    Josh Morris
    I think the bottle is a bit too small for my taste.
  • 5 out of 5
    Sienna Hudson
    This is a good bottle. Pros: - super easy to fill - good looking - super easy to drink from - doesn't drip AT ALL Cons - you need smaller ice cubes. - doesn't hold a LOT of water.
  • 3 out of 5
    Nicholas Evans
    The bottle was too small for my taste, but my wife loved it. So she has it now and I'm buying a bigger one.
  • 4 out of 5
    Melody Thomas
    My girlfriend game the Kool8 bottle a name: The Mighty Midget. Lol. So the bottle itself isn't THAT small - holds about 16 ounces of water. It's great to drink from at the office, on the go, in the car. Definitely not as versatile as some of the larger bottles but for me - it does the job.
  • 5 out of 5
    Ava Chen
    I bought a couple of them because they are of super good quality. The cap is made of stainless steel as well. Which is great because there's ZERO chances of spillages.
  • 4 out of 5
    Jane Paterson
    I really needed a water bottle to help with my weight loss journey. The Kool8 water bottle did the trick. I personally REALLY like that this bottle isn't huge. Some may find it a turnoff, but I truly think this is as big a water bottle should be. It's a bit difficult to fill it up with regular-sized ice cubes - that's my only complaint.
  • 5 out of 5
    Taylor Wright
    I use the Kool8 water bottle 4-5 times a week. No cracks, no deterioration in quality over time. They say now to wash it in the dishwasher, but I did, and still no issues.
  • 5 out of 5
    Dwayne Cole
    I bought this as Christmas present for my girlfriend. She's really digging it.
  • 4 out of 5
    Avery Clark
    I've been using this bottle for almost three months now. I've dropped a few times on concrete a few times. It has some scratches but zero cracks. I recommend this bottle.
  • 5 out of 5
    Nathan Reynolds
    I bought this bottle primarily due to its sleep design - and it didn't disappoint.
  • 5 out of 5
    Kyle Gallagher
    Amazing stainless steel water bottle. Customer service was great too. They immediately took care of me after I mistakenly placed the order twice.
  • 4 out of 5
    Harley Kline
    I've had this water bottle for one year. I'm really upped my hydration game due to this lovely water bottle.
  • 5 out of 5
    Alexandra A
    Recently bought this water bottle recommended by a friend. Worth every penny! The insulation and texture is well made. Keeps my beverage at the ideal temperature for hours on end
  • 5 out of 5
    Andrea Stone
    This is a very good and sturdy water bottle. And everyone at work asks me where I bought it for, complimenting me on its looks and feel. Love it.
  • 4 out of 5
    Jason Brodigan
    A bit smaller than I would have hoped. But still hold 16 ounces of liquid easily.
  • 5 out of 5
    Ashley West
    This bottle is awesome. I bought one for my mom and she likes it too.

  • Unparalled techonolgy

    Kool8 keeps your dring cold up to 24 hours and hot up to 12 hours.

    Straight from our customers
    This water bottle is phenomenal. It is uncanny to drink a cold brew that's one day old and to not be able to tell the difference.

    Eco-friendly & BPA free

    One durable water bottle, thousands of plastic bottles saved. Kool8 is environmentally responsible and BPA free.

    Straight from our customers
    Geez, I think I probably saved over $1000 bucks and at least 500 bottles since I got my Kool8 bottle a year ago. It feels darn good!

    Tea-lover approved

    Stay calm, stay vibrant, stay healthy. Tea lovers will rejoice with a bottle that supports all your favorite teas.

    Straight from our customers
    I drink loose tea every single day. The strainer is God-sent. So simple and elegant. I don't get why the tea strainer is not mandatory to ALL water bottles. You guys totally rock!!!

    Our mission

    We designed Kool8 to be the bottle that does good, looks good, and keeps your beverages tasting great.

    Every time you buy a bottle, 20% of the profit goes towards delivering clean water to underprivileged regions in the world, and the people there that need it most. And with each purchase you make, we’ll show you how you’re making a direct difference in their lives.

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