Overview
Hydration on the go.
They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough to keep you going for hours without weighing you down.
Product Benefits
- Versatile, middle-of-the-road size, equipped with our insulated Sport Cap
- TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with our Standard Mouth Flex Cap
- Lifetime Warranty
- Sport Cap is not intended for use with hot liquids and is not leakproof
Size & Dimensions
| 21 oz | |
|---|---|
| Volume | 621 mL |
| Mouth Diameter | 1.91" |
| Diameter | 2.87" |
| Height | 10.4" |
| Weight | 11.3 oz |
Tempshield™
Colder. Hotter. Longer.
Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.
Proprietary Powder Coat
Comfortable and durable.
Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.
BPA-Free
Sip and enjoy.
Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.
Lifetime Warranty
We stand behind our products.
Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.
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Overview & Specs
Overview
Hydration on the go.
They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough to keep you going for hours without weighing you down.
Product Benefits
- Versatile, middle-of-the-road size, equipped with our insulated Sport Cap
- TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with our Standard Mouth Flex Cap
- Lifetime Warranty
- Sport Cap is not intended for use with hot liquids and is not leakproof
Size & Dimensions
| 21 oz | |
|---|---|
| Volume | 621 mL |
| Mouth Diameter | 1.91" |
| Diameter | 2.87" |
| Height | 10.4" |
| Weight | 11.3 oz |
Technology
-
Tempshield™
Colder. Hotter. Longer.
Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure.
-
Proprietary Powder Coat
Comfortable and durable.
Our proprietary powder coat means an easy-grip, sweat-free, and extra-durable bottle that you can take anywhere.
-
BPA-Free
Sip and enjoy.
Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.
-
Lifetime Warranty
We stand behind our products.
Hydro Flask guarantees this Hydro Flask product with a limited lifetime warranty against manufacturer defects.
Video
Reviews/Q&A
Related Products
Reviews
Q & A
- 21 oz Standard Mouth w/ Sport Cap is rated out of 5 by 301.Rated 5 out of 5 by Leslie45 from Amazing Bought one a while back , love how cold/hot it keeps my waterDate published: 2019-09-20Rated 5 out of 5 by Katelyn120 from Great quality I bought one a while back and had to get my toddler one they are such great qualityDate published: 2019-09-19Rated 5 out of 5 by madzhunnybunmy from awesome i bought this, so happy with it. awesome totally totally awesomeDate published: 2019-09-19Rated 5 out of 5 by lexie04 from amazing quality? i bought another one and little bit ago and i has it all the time. it keeps my drinks nice and cool and i highly recommend it!Date published: 2019-09-19Rated 5 out of 5 by tennisplaya25 from Durability I have dropped this thing sooooo many times, yet it is still in one piece and pretty!!Date published: 2019-09-19Rated 5 out of 5 by AG2014 from Great quality I’ve been wanting to buy a hydro flask for long I finally got one ! I’d recommend:)!Date published: 2019-09-19Rated 5 out of 5 by Kaylee5 from YEP I love it so much and I literally take it every we’reDate published: 2019-09-19Rated 5 out of 5 by aliyah7 from great to keep drinks cold i really love these so much. i never wanted to purchase one because i felt like everyone had one but i’m glad i did. never leave without itDate published: 2019-09-19Rated 5 out of 5 by yoty 7 from Excellent Cap I bought this the other week and I have no regrets! Definitely recommend if you have long outdoor sporting events, like softball/baseball, soccer or football.Date published: 2019-09-19Rated 5 out of 5 by mikaylah23 from great looks! i love how you made them and how they’re trending :)Date published: 2019-09-19Rated 5 out of 5 by Isabel24 from A Great Bottle I have this bottle and it is worth it. It keeps my drinks cool and it is a cute bottle. I would recommend this to my family and friends and already have and they love it as well. Overall a Great bottle.Date published: 2019-09-18Rated 5 out of 5 by Naii from Great colors and features I bought this 2 weeks ago and it great it keeps my water cold all day!!!!!Date published: 2019-09-18Rated 5 out of 5 by kylalk08 from Love it!! I have had a hydro flask for quite some time now and I’m absolutely in love! It keeps my water cool and it’s so stylish! Thank you for making a great product!Date published: 2019-09-18Rated 5 out of 5 by asmith from Chilling Stays cold for hours even when left in a hot car!!Date published: 2019-09-18Rated 5 out of 5 by rorey from amazing keeps drink cool really good for hiking. matches my fave scrunchyDate published: 2019-09-18Rated 5 out of 5 by Haileycc from stays cold or hot up to log periods of time i love the product so efficient and easy my kids love the product for school as well thought about buying me oneDate published: 2019-09-18Rated 5 out of 5 by Stephgp from Cute Colors Great to keep water cool. Good to take on a hike or run.Date published: 2019-09-17Rated 5 out of 5 by Me66 from Great features I bought this because I heard so many great recommendations about them. When I got my own I fell in love with it’s convenience and how it kept my water perfectly cold. Also the colors are so cute.Date published: 2019-09-17Rated 5 out of 5 by Weston 15 from Save the turtles Yeah this is the best water bottle I’ve gotten and is super insulatedDate published: 2019-09-17Rated 5 out of 5 by danidan from perfect drinking size! not too much or too little! I just got this a few weeks ago and I love it! so cute and handy.Date published: 2019-09-17
Can anyone recommend a bike cage for this bottle? I tried a plastic one to hold the bottle but the bottle was too heavy for the plastic and broke. I now have a metal cage but the metal on metal makes a lot of noise while riding my bike.
We regret to inform you that our products are not specifically designed to be carried in bike cages and they have not been tested for such use. We would be concerned about the possibility of the cage causing scratches, chips, and dents to your flask from improper fit and jostling. Therefore, we do not recommend carrying Hydro Flask products in bike cages.Date published: 2019-06-07Is anything being done about the leaky sports lid? I wanted to get one for my husbands birthday.
If the cap starts to leak, we'd be happy to replace your cap for you under our Lifetime Warranty. You can fill out a warranty claim here: (http://www.hydroflask.com/warranty/)Date published: 2019-06-06I see several complaints about the sports cap leaking. I want a cap that you don't have to unscrew to drink from and need the standard size to fit into my cupholder. Anyone have good experience with the sports cap or recommendations for a different one?
The Standard Mouth Sports cap is NOT advertised as leak proof, and there is potential for dripping if overturned or shaken. If transporting your flask in a situation where it may not remain upright or could be jostled, we recommend using a sealed lid such as the Flex Cap.Date published: 2019-06-06Do I need to purchase a straw for this water bottle or is the included sport cap all I need?
The sports cap is made to be tilted up to drink from.The product does not come with a straw included.Date published: 2019-06-01Does it have a straw in it?
The Sports Cap just has the spout. It does not have a straw in the lid.Date published: 2019-05-31Which bottle best fits into a bicycle water bottle cage holder? Could you please include photos of bicycles with a hydroflask in the bottle cage? It would be so much more helpful than your standard response to this question on the FAQ page.
I use the 21 oz bottle with the flex cap in my bike holder and I believe the 24 oz would also fit since it’s just taller.Date published: 2019-05-07I’m planning to order a hydro and would love to put stickers on it. What is the area of this hydro so I’ll know how many stickers to order? Thanks!
Quinlan21, Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/Date published: 2019-05-07Will a straw lid be available for the 21oz HF?
We do not currently manufacture a product that matches your request, but we’ll document your suggestion for future consideration by our Product Development Team.Date published: 2019-01-11
