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21 oz Hydro Flask Item #FP124

12 hours hot and 24 hours cold - Hydro Flask is the ultimate travel bottle!
21 oz Hydro Flask

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Why waste money and paper cups on caffeine pick-me-ups throughout the day when this double-walled dynamo will keep your morning coffee hot for 12 hours! And cold beverages stay chilled for 24 hours! It's all in the innovative design and construction: double-insulated stainless steel maintains the perfect temperature, won't scald your hands, and won't sweat with condensation. Perfectly sized for travel, it has a wide-mouth opening, narrow shape for car cup-holders (and easy packing), and a leakproof lid with loop that clips conveniently to any day bag or backpack. Hand wash.

More Information

The Hydro Flask is made from food grade stainless steel, and is 100% BPA free. It will keep your cold liquids cold for 24 hours and your hot liquids hot for 12 hours. Remarkably lightweight yet durable, it won't retain flavors from your previous beverage, and the bottles' materials won't leach into your drink.

Product Features:

  • Hydro Flask 21 ounce bottle
  • Made from food grade 18/8 stainless steel - remarkably lightweight, yet extremely durable
  • 100% BPA-free
  • Double wall insulated
  • Liquids will stay hot or cold for 12-24 hours
  • Hydro Flask bottles have no linings or coatings
  • Flavors from your previous beverages won't linger, and the bottles' materials won't leach into your drink
  • Pre-heat or pre-chill your bottle to maximize the period of time your liquids will stay hot or cold
Size: 10 1/2 x 2 3/4"; 1 3/4" - Mouth diameter
Weight: 11 oz
Materials: 18/8 stainless steel

Customer Reviews

Love it - Review by

Nice wide mouth on it which makes it easy to put ice into and the ice stays frozen in it all night. I hightly recommend this flask. Doesn't have a bad taste like some other flasks.

(Posted on 11/3/12)
My new favorite beverage holder - Review by

My wife, daughter, and I each got one of these flasks for our month-long backpacking trip through Europe. Summer is hot in Greece and Italy, and these flasks were perfect to keep us hydrated. Not only did they keep water cold, but they are also very rugged. The only drawback is that my daughter lost her flask near the end of the trip :-( but we'll replace it because these things are so great. If you need a flask for life, this is the one to get!

(Posted on 8/6/12)
Best water bottle ever! - Review by

I bought this bottle anotis out performs any It does not sweat like other stainless bottles. It keeps ice for hours and beverages amazingly well, even when left in a car in Texas, with outside temps are over 100. Great for long auto trips. It is as good as advertised! Definitely a great gift item for that person who is really hard to buy for.

(Posted on 8/2/12)

We bought one of these for our Spain Honeymoon, and we filled it with ice and water and all day we refilled it with just water and the ice lasted ALL DAY!! Im at the beach showing my family and we tested it, I filled it yesterday at 11am drank from it refilled with just water, and their was still the original ice in it this morning at 11am. Thats 24 HOURS!! We are going to buy one for each family member they are the best!!!

(Posted on 7/10/12)
Best for cold and hot liquid - Review by

We have used them for the last two months, they are great.It keeps the cold for hours.Very well made.Will buy more soon.

(Posted on 6/29/12)
As Advertised - Review by

We purchased two for a recent road trip. We filled the thermos in the morning before we left the motels. It stayed very drinkable until late afternoon. They worked so well we are orderiing two more to hold cold water. We did find it was so hot in the beginning. the driver needed to have some hot coffee poured in a cup to cool off a little (for safety).

(Posted on 5/30/12)
Hydro Flask - Review by

Great product, kept my drink really cold in the warm temperatures during our holiday.

(Posted on 5/11/12)
Hands down, the best water bottle - Review by

I was skeptical because all the other manufacturers make claims that their products just don't live up to. Hydro Flask is the exception. These stainless steel bottles keep things hot for 12 hours and even in the AZ desert, they keep liquids cold for 24 hours. Additionally, I travel quite a bit and I've not had any trouble in any airports as long as the flask is empty when you go through security.

(Posted on 3/27/12)
Hydro Flask - Review by

This flask is easy to open and use and keeps beverage nice and cold. It does tend to send out red flags with international travel - might be best to just use it at home

(Posted on 3/15/12)
Great Product - Review by

This does exactly what it says, kept my water cold and my tea hot. My family was jealous so I have since bought them all one.

(Posted on 9/9/11)
Excellent! - Review by

This product works great! Keeps Hot things Hot and Cold things Cold! Easy to fill, easy to pour from or to dring right from the neck! The 21 Oz size is just right for me. The flask is not to big as to be in the way and it fits easily into car and boat cup holders. With the choice of colors you can color code for hot or cold.They make great gifts at Christmas, Birthdays or any time.

(Posted on 9/1/11)

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21 oz Hydro Flask

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