About the Hydro Flask 21oz Standard Mouth with Flex Cap
As part of their hydration collection, the Hydro Flask 21oz Standard Mouth water bottle is perfect for keeping cold drinks cold and hot drinks hot - hour after hour.
Whether you're taking your morning coffee to the office, hiking through the mountains or simply heading to the gym, Hydro Flask's TempShield™ double-wall vacuum insulation ensures your beverage of choice tastes exactly how you want, for as long as you need it to.
A double-walled inner and outer chamber within the flask creates a vacuum to prevent heat transfer through conduction while the insulated Flex Cap lid prevents temperature change through convection. In addition, the inner chamber features a reflective lining for further heat retention. The result is a flask unrivalled in its ability to ensure optimal temperatures for your drink of choice: staying cold for up to 24 hours and hot for up to 12 hours.
The Hydro Flask 21oz Standard Mouth water bottle features the Flex Cap with a handy carry-loop for a travel-friendly design that's ideal for those constantly on the move. The circumference of the standard mouth design is effortlessly able to accommodate ice cubes, to give your beverage that extra chilled factor on long days.
Hydro Flask water bottles use 18/8 Pro-Grade stainless steel which is BPA-free. Hydro Flask is proud to offer a lifetime warranty with the 21oz Standard Mouth water bottle.
The Hydro Flask 21oz Standard Mouth water bottle is perfect for a busy day. Whether you're commuting or hiking trails, stay hydrated no matter the temperature.
TempShield®? double-wall vacuum insulation 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 Standard Mouth Insulated Sport Cap
Reviews
Feefo User
26/06/2024
Great product and brilliant service from Absolute Snow! Best price and super fast delivery! Came in two days!
Jaime
30/10/2023
Great size water bottle. Well made and sturdy for carrying in a backpack. It also keeps cold drinks cool and hot drinks warm for ages.
Hydro Flask are on a mission to save the world from lukewarm. Keep your beverages heated or chilled with the best double wall vacuum insulated bottle out there. All bottles come with a lifetime warranty.