Hydro Flask 21oz Standard Mouth With Flex Cap Drinks Bottle

RRP: £35.00
You save 20%
Free delivery on orders above £100.00

All about this product



No matter where your day takes you, the Hydro Flask 21oz Standard Mouth water bottle is your reliable companion. Whether you're embarking on a mountain hike, or hitting the gym, this bottle ensures your beverage tastes just the way you like it, for as long as you need it to.


Thanks to Hydro Flask's innovative TempShield double-wall vacuum insulation, your drink's temperature remains exactly as you desire. The flask's double-walled inner and outer chambers create a vacuum, effectively preventing heat transfer through conduction. The insulated Flex Cap lid further inhibits temperature changes through convection. Inside, a reflective lining enhances heat retention, setting this flask apart as the ultimate temperature guardian. It can keep your drink refreshingly cold for up to 24 hours or piping hot for up to 12 hours.


The 21oz Standard Mouth design features the convenient Flex Cap, complete with a practical carry-loop, making it perfect for those constantly on the go. Its circumference effortlessly accommodates ice cubes, ensuring your beverage stays refreshingly chilled on those long, demanding days. Hydro Flask is committed to using 18/8 Pro-Grade stainless steel, which is BPA-free and ensures the safety of your beverages. Whether you're commuting, tackling hiking trails, or simply navigating a busy day, the Hydro Flask 21oz Standard Mouth water bottle guarantees you'll stay hydrated, regardless of the temperature.


Technical details

Ideal use:

Travel, camping, outdoor expeditions


18/8 Pro Grade Stainless Steel

Durable, sweat-free powder coated finish

BPA Phthalate free

Key features:

TempShield double wall vacuum insulation

Ensures pure taste and no flavor transfer

Versatile, middle-of-the-road size

Supplied with leakproof Flex Cap

Honeycomb insulated cap

Standard mouth opening

Color Last powder coat

Dishwasher safe

Carry loop

Tech specs:

Capacity: 21oz (621ml)

Keeps Hot up to 12 Hours

Keeps Cold up to 24 Hours

Dimensions: 23.9 x 7.3cm

Weight: 320g



Bottle material
Stainless Steel


Volume (ml)
Bottle features
BPA free, Insulated, Leak proof, Suitable for hot drinks
Cap type
Screw cap

Other features

Hydro Flask
Ideal For
Athleisure, Festival Camping, Hiking, Travel
Outdoor accessories
Drinking Equipment
Product Code
Reviews (154)

User Reviews (154)

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