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  • Hydro Flask - 21oz Standard Mouth Water Bottle -

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  • Hydro Flask - 21oz Standard Mouth Water Bottle -

Hydro Flask 21oz Standard Mouth Water Bottle

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20 Reviews


Pour a hot cup of coffee into Hydro Flask's 21oz Standard Mouth Water Bottle before dawn patrols, and expect it to stay piping hot until you get back to the car. Its TempShield double wall insulation maintains the same temperature for a long time. Hydro Flask made this water bottle from pro grade stainless steel so you won't taste last night's cocktail in today's hangover remedy. Hydro Flask coated this bottle with a grippy powder coat for better handling.

  • TempShield double wall insulation
  • Pro grade stainless steel
  • Durable, sweat-free powder coat finish
  • Item #HYF001A

Tech Specs

18/8 pro grade stainless steel
21 oz
Recommended Use
Manufacturer Warranty
limited lifetime

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

love it

  • Familiarity: I've put it through the wringer

I have alot of Hydro flask bottles and love them all. keeps things warm or cold all day and they come in a bunch of colors in case you are a fashion drinking kind of person.

Greatest bottle ever!!!!

  • Familiarity: I've put it through the wringer

I,ve had this bottle for over a year and use it just about everyday. I usually just put water in it but sometimes hot liquids and it almost keeps them too hot!

Keep it hot or cold

  • Familiarity: I've put it through the wringer

Branded for the adventurous. This bottle is sleek and keep my coffee hot in the snow covered mountains and my water cold in the scorched desert. After a rinse the coffee taste is gone and ready for water without a bad taste.

Great water bottle

  • Familiarity: I've used it several times

I have only used this bottle for water but it does a great job. I love that my water tastes like water and nothing else. It keeps my water cold long enough for me to drink it throughout the day.

Dedicated Water Bottle

    I have other Hydro Flasks that I use for water/coffee/tea/whatever else but it's so great to have one dedicated for just water. I tend to leave my coffee in the car..... sooo my bottles get a bit funky. I'm pretty picky about water tasting good and my water always tastes fresh in this bottle and stays cold throughout the day. Plus the mango color is bright and fun!

    The best water bottle

    • Familiarity: I've put it through the wringer

    I take my hydroflask everywhere with me. I have it in multiple sizes and colors. With the 21oz, i have the sport lid to go with it and it is like a match made in heaven. Buy it, you won't regret it.

    High Performance Water Bottle

    • Familiarity: I've put it through the wringer

    Hydro Flask is an awesome bottle company! I filled my bottle up with ice water in 100 degree weather and the ice lasted all day long! I have another separate bottle I use just for coffee (the coffee smell/taste tends to linger in the bottle) and I have hot steamy coffee all day long, it stays almost too hot. The bottle is very durable and can withhold being dropped. The lid is secure and tight making sure no fluids will leak or spill. I use my hydro flask bottles every single day.

    I once placed the bottle in the freezer with a little water expecting it to turn to ice, it won't. Just saying :)

    Great Size

    • Familiarity: I've used it several times

    I love this size water bottle it's perfect for a small backpack or going into the office. It is nice an light weight so you hardly notice it. Hydroflask is going to keep your water temp very consistent too!

    The BEST water bottle EVER!

    • Familiarity: I've put it through the wringer

    I never knew I could feel so passionate about a water bottle. This thing picks up NO lingering odors or tastes, whether you fill it with water, coffee, juice or booze. I filled it with iced coffee yesterday morning and the ice was still frozen this morning when I woke up! Because my water is always cold and fresh, this thing actually really encourages me to stay hydrated! Never, ever, ever leaks, even when it's upside down. Love, love, love!

    It all starts with one...

    • Familiarity: I've put it through the wringer

    My wife got one, then I was jealous. I got one, and then I got a second one. A container that keeps cold liquids cold and hot liquids hot- for a really long time. I got the 20oz wide for hot liquids and the 32oz wide as my water container- no complaints about either. My wife, for now, just has the 21 standard skinny bottle with the water bottle lid and loves it. (water bottle lid sold separately- also highly recommended)

    Worth The Money

    • Familiarity: I've put it through the wringer

    The first time I bought this water bottle, I didn't understand what the hype was about. I then went hiking in the hot desert and forgot this bottle in the extremely hot car! When I got back hours later, I was shocked to still have ice water still in the bottle!I have had my original bottle for over 4 years of daily use, and it still works great!
    I have bought everyone of my family members this bottle for Christmas/Birthdays. They make awesome presents!
    Con: They are a tad heavy, so I leave mine behind when backpacking. They are also a little hard to clean

    The best

    • Familiarity: I've used it several times

    Hydroflask makes some amazing products, and this is one of them! If you are dedicated to investing in a very durable waterbottle, this is the one! Your water will stay cold for hours! And I've never had any issues with leaking from the lid.

    Good for water

    • Familiarity: I've put it through the wringer

    I used this water bottle gardening on extremely hot days in Salt Lake City. Its great because the ice stays frozen for a whole day, even in extreme heat.

    Its not as great because the narrow opening makes it hard to get big ice cubes in there. And harder to clean if you use it for anything except water.

    I have this water bottle in white. That was a mistake. It always ends up on the ground or in the bottom of my backpack, and it got really banged up. The scratches show on white and it looks dirty. Its just a cosmetic thing but I wouldn't recommend white.

    Keeps my drinks nice and cold

    • Familiarity: I've used it several times

    I got this for work to keep my water cold and it defiantly gets the job done. I can put ice in it in the morning, work all day, then come home and the ice is still mostly frozen. I would recommend this product to others but I would suggest to get the wide mouth bottle because all the other lids work with that style.

    Great Bottle!

    • Familiarity: I've used it several times

    This will be my second Hydroflask in this size. It is a great size to take with you on a walk, and on the go. These bottles are great at always keeping cold things cold, and warm things warm. It is heavy duty, and the lid makes it easy to carry.