Bottles

21 oz Standard Mouth w/ Sport Cap

£33.95
21 oz Standard Mouth w/ Sport Cap

Bottles

21 oz Standard Mouth w/ Sport Cap

£33.95


  • Sport Cap
    Sport Cap
     
  • Flex Cap - -£7.26
    Flex Cap
     

Sale discount on this color will be automatically applied in cart.

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
  • TempShieldTM 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"
Product Diameter 2.87"
Product Height 10.4"
Product Weight 11.3 oz
  • TempShield

    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.

  • BPA-Free

    BPA-Free

    Sip and enjoy.

    Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.

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
  • TempShieldTM 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"
Product Diameter 2.87"
Product Height 10.4"
Product Weight 11.3 oz

Technology

  • TempShield

    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.

  • BPA-Free

    BPA-Free

    Sip and enjoy.

    Our products are BPA-free for ultimate purity. Stay refreshed and worry-free.

Video

Reviews/Q&A

  • Reviews

  • Q & A

  • 21 oz Standard Mouth w/ Sport Cap is rated 4.5 out of 5 by 332.
    Rated 5 out of 5 by from My daughter absolutely loves the flask This was a birthday gift for my daughter! We purchased the yellow color flask and the color is very sunshine and beautiful.
    Date published: 2019-09-29
    Rated 5 out of 5 by from Awesome I didnt buy it yet but it looks cool, can someone buy it for me, i have no money.
    Date published: 2019-09-27
    Rated 5 out of 5 by from The Best! I bought this for my teen age sons birthday. It keeps his water ice cold all day long even in ninety degree temperatures. There is even still ice in the bottle at the end of the day. Awesome!
    Date published: 2019-09-26
    Rated 5 out of 5 by from Amazing!!! This water bottle stays so cold!!I left it on the beach in 98 degree weather for 13hours and it was fine
    Date published: 2019-09-26
    Rated 5 out of 5 by from Black hydro flax Love it! Keeps my morning coffee hot all day. Also, keeps water cold for several days. I carry it with me and it’s on my nightstand at night.
    Date published: 2019-09-25
    Rated 5 out of 5 by from Great waterbottle! I love this water bottle and have been using it for almost 2 years! Great quality!
    Date published: 2019-09-24
    Rated 5 out of 5 by from Secured I bought this bright one and ever since it's the only bottle that suits me and I take everywhere
    Date published: 2019-09-21
    Rated 5 out of 5 by from Amazing bottle I got this as a gift and I love it sooo much. This kept my tea hot for hours!! I also put my iced coffee in this and it was cold the whole day!! Love this definitely getting more!!!
    Date published: 2019-09-21
    Rated 5 out of 5 by from Good lis I bought this a year ago and it’s amazing.I love the colors and the this is the perfect size for running errands. The lid gets a little dirty but it works great
    Date published: 2019-09-20
    Rated 5 out of 5 by from Good water bottle Keeps water cold and other water bottle that I had in the pass, water has came out from the mouth cap but this one keeps the water in.
    Date published: 2019-09-20
    Rated 5 out of 5 by from Super Durable I’ve been using hydroflasks for almost 5 years and I’ll never use another brand again!
    Date published: 2019-09-20
    Rated 5 out of 5 by from Looove! Keeps water cold all day. Could NOT be happier with my purchase :)
    Date published: 2019-09-20
    Rated 5 out of 5 by from AMAZING BOTTLE! I love my hydro flask because it keeps my water cold all day and my ice doesn’t even melt!
    Date published: 2019-09-20
    Rated 5 out of 5 by from Love it! Literally the best! Idk how I lived life without it
    Date published: 2019-09-20
    Rated 5 out of 5 by from amazing water bottle i’ve been wanting the perfect water bottle and i found it . it keeps the water cold and holds a good amount of water
    Date published: 2019-09-20
    Rated 5 out of 5 by from TOO AWESOME! Great Bottle, keeps me hydrated during long university days and does amazing on backpacking trips!
    Date published: 2019-09-20
    Rated 5 out of 5 by from Great Features!! The NEW colors look amazing! I got one from here and it is great!
    Date published: 2019-09-20
    Rated 5 out of 5 by from Amazing ! I bought this a little over a year ago and it’s still living up to what I expected keeping my water super cold or hot when I need it too
    Date published: 2019-09-20
    Rated 5 out of 5 by from The best water bottle i’ve ever used !!!! So happy i purchased one, would love more in the future.
    Date published: 2019-09-20
    Rated 5 out of 5 by from Best Purchase EVER!!! I bought one a year ago and likes so much so I’m buying another one for my bff. Keeps my water cold for hours and encourages me to drink more.
    Date published: 2019-09-20
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  • 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.

    Asked by: MikeB82
    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.
    Answered by: Consumer Service
    Date published: 2019-06-07

    Is anything being done about the leaky sports lid? I wanted to get one for my husbands birthday.

    Asked by: Princess Lu
    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/)
    Answered by: Consumer Service
    Date published: 2019-06-06

    I 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?

    Asked by: Lucy Lee
    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.
    Answered by: Consumer Service
    Date published: 2019-06-06

    Do I need to purchase a straw for this water bottle or is the included sport cap all I need?

    Asked by: ward
    The sports cap is made to be tilted up to drink from.The product does not come with a straw included.
    Answered by: Consumer Service
    Date published: 2019-06-01

    Does it have a straw in it?

    Asked by: Soccergirl11
    The Sports Cap just has the spout. It does not have a straw in the lid.
    Answered by: Consumer Service
    Date published: 2019-05-31

    Which 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.

    Asked by: SLuke
    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.
    Answered by: Kim99
    Date published: 2019-05-07

    I’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!

    Asked by: quinlan21
    Quinlan21, Product dimensions can be found on our FAQ page. You can see them here: http://www.hydroflask.com/frequently-asked-questions/
    Answered by: customer servcie
    Date published: 2019-05-07

    Will a straw lid be available for the 21oz HF?

    Asked by: Haughtohio72
    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.
    Answered by: Hydro Flask Customer Team
    Date published: 2019-01-11
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