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Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish

Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish

(4,546 reviews)

This best-selling, middle-of-the-road size bottle stashes easily in a small shoulder bag, the side pocket of a backpack or your vehicle's cup holder. Features a standard mouth opening for easy, on-the-go sipping. Stainless steel construction won't retain or transfer flavors and is tough enough to take on any adventure. Double-wall TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours or hot for up to 12 hours. Honeycomb Insulation inside the twist-off cap provides additional temperature control.

This best-selling, middle-of-the-road size bottle stashes easily in a small shoulder bag, the side pocket of a backpack or your vehicle's cup holder. Features a standard mouth opening for easy, on-the-go sipping. Stainless steel construction won't retain or transfer flavors and is tough enough to take on any adventure. Double-wall TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours or hot for up to 12 hours. Honeycomb Insulation inside the twist-off cap provides additional temperature control.

$38.49 - $54.95

in 3 offers

Colour:

Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask Standard 21oz Goji
Hydro Flask Standard Flex Cap Mesa 18 oz

Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish

$38.49

(4,546 reviews)

This best-selling, middle-of-the-road size bottle stashes easily in a small shoulder bag, the side pocket of a backpack or your vehicle's cup holder. Features a standard mouth opening for easy, on-the-go sipping. Stainless steel construction won't retain or transfer flavors and is tough enough to take on any adventure. Double-wall TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours or hot for up to 12 hours. Honeycomb Insulation inside the twist-off cap provides additional temperature control.

This best-selling, middle-of-the-road size bottle stashes easily in a small shoulder bag, the side pocket of a backpack or your vehicle's cup holder. Features a standard mouth opening for easy, on-the-go sipping. Stainless steel construction won't retain or transfer flavors and is tough enough to take on any adventure. Double-wall TempShield insulation eliminates condensation and keeps beverages cold for up to 24 hours or hot for up to 12 hours. Honeycomb Insulation inside the twist-off cap provides additional temperature control.

Colour:
Hydro Flask 21oz / 621ml Standard Mouth Bottle - Starfish
Hydro Flask Standard 21oz Goji
Hydro Flask Standard Flex Cap Mesa 18 oz

Price comparison

Last updated at 22/05/2025 19:53:15

Hydro Flask Australia

$38.49

+ $8.00 delivery

Go to store

McCredden's Fishing & Outdoors

$49.95

+ $10.00 delivery

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Matchbox

$54.95

+ $12.50 delivery

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Catch.com.au

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$70.00

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Up to 4.2% cashback

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Up to 3.6% Cashback

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$70.00

available 8 months ago

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Cold Wave Store

$40.00

available 8 months ago

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available 9 months ago

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Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Southern Man Surf Shop

$35.00

available 9 months ago

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BamixShop

$54.95

available 9 months ago

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$51.97

available 10 months ago

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Coopers Surf Australia

$54.99

available 11 months ago

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Teros

$49.95

available about 1 year ago

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$44.99

available about 1 year ago

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$54.95

available about 1 year ago

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outerbound.com.au

$58.46

available about 1 year ago

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$39.96

available about 1 year ago

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$54.95

available over 1 year ago

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$38.47

available over 1 year ago

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$55.00

available over 1 year ago

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shopglasswares.com

$38.47

available over 1 year ago

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Trigger Bros. Surfboards

$64.95

available over 1 year ago

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Snowcountry.eu

$40.11

available over 1 year ago

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Twelve Board Store

$42.49

available over 1 year ago

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Amazon.com.au

$65.58

available over 1 year ago

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Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Lot 39 Store & Cafe

$64.95

available over 1 year ago

Low stock

Wild Earth

$31.77

available over 1 year ago

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$49.95

available over 1 year ago

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Everything Kitchen

$32.97

available over 1 year ago

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$64.95

available over 1 year ago

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Sanbah Australia

$49.99

available over 1 year ago

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$54.99

available over 1 year ago

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ssense.com

$45.00

available over 1 year ago

Low stock


cashrewards

Up to 4.5% cashback

shopback

Up to 3% Cashback

Kitchen Antics

$54.95

available over 1 year ago

Low stock

Price history

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Price history

​
​

Reviews

29 May 2023
aliyah.n

originally posted on influenster.com

20 July 2023
eitan.s

originally posted on influenster.com

1 March 2023
kristen.s

originally posted on influenster.com

Specification

Catalog numberS21SX827
SeasonSpring/Summer 22
Mouthpiece diameter4.85 cm

Price comparison

Updated 2 days ago
Hydro Flask Australia

$38.49

+$8.00 delivery
McCredden's Fishing & Outdoors

$49.95

+$10.00 delivery
Matchbox

$54.95

+$12.50 delivery

cashrewards

3.9% cashback

See 41 more history offers

Natural Necessity Surf Shop

$54.95

Low Stock
Wicks Surf

$54.95

Low Stock
Crew Brothers

$54.95

Low Stock
HyperLuxe

$30.00

Low Stock
Catch.com.au

$54.95

Low Stock
Brosa

$70.00

Low Stock
Rhythm Snowsports

$34.97

Low Stock
Slimes Newcastle

$54.99

Low Stock
Kogan.com

$70.00

Low Stock
Bunnings Warehouse

$70.00

Low Stock
Dick Smith AU

$70.00

Low Stock
MyDeal

$70.00

Low Stock

cashrewards

Up to 4.2% cashback


shopback

Up to 3.6% Cashback

Matt Blatt

$70.00

Low Stock
Cold Wave Store

$40.00

Low Stock
eBay.com.au - matchbox_australia

$70.00

Low Stock
Southern Man Surf Shop

$35.00

Low Stock
BamixShop

$54.95

Low Stock
Oliunìd

$51.97

Low Stock
Coopers Surf Australia

$54.99

Low Stock
Teros

$49.95

Low Stock
City Beach

$44.99

Low Stock
Inland Surf Warragul

$54.95

Low Stock
outerbound.com.au

$58.46

Low Stock
MoTackle & Outdoors

$39.96

Low Stock
Board Collective

$54.95

Low Stock
travelmugssales.com

$38.47

Low Stock
Highs and Lows

$55.00

Low Stock
shopglasswares.com

$38.47

Low Stock
Trigger Bros. Surfboards

$64.95

Low Stock
Snowcountry.eu

$40.11

Low Stock
Twelve Board Store

$42.49

Low Stock
Amazon.com.au

$65.58

Low Stock
Lot 39 Store & Cafe

$64.95

Low Stock
Wild Earth

$31.77

Low Stock
Hemley Store

$49.95

Low Stock
Everything Kitchen

$32.97

Low Stock
Mandi at Home

$64.95

Low Stock
Sanbah Australia

$49.99

Low Stock
City Beach | AU

$54.99

Low Stock
ssense.com

$45.00

Low Stock

cashrewards

Up to 4.5% cashback


shopback

Up to 3% Cashback

Kitchen Antics

$54.95

Low Stock

Price history

​
​

Price history

​
​

Reviews

29 May 2023
aliyah.n
originally posted on influenster.com
20 July 2023
eitan.s
originally posted on influenster.com
1 March 2023
kristen.s
originally posted on influenster.com
17 November 2022
leah.m
originally posted on influenster.com
28 May 2023
nathan.v
originally posted on influenster.com
18 April 2023
tavita.f
originally posted on influenster.com
Best Bottle Ever
18 November 2022
Bhorton7
originally posted on hydroflask.com
Bright, strong, and insulated!
2 April 2023
Bbjniles
originally posted on hydroflask.com
Little or No Concern for the Environment
12 July 2023
Village Idiot
originally posted on REI
Purchase Owala Instead, This is Overpriced Junk
11 May 2023
Nurbie
originally posted on REI

Specification

Catalog numberS21SX827
SeasonSpring/Summer 22
Mouthpiece diameter4.85 cm