Standard delivery to UK addresses is free over £29.

Next Day deliveries will be shipped same day if you place your order before 2pm Monday - Friday.

If you are not happy or have changed your mind you can return your unused product within 123 days of placing the order for a refund. Simply return it to us, free of charge, with all the original packaging.


A flexible hydration solution. Literally. The 3L Hydrater is a BPA-free, collapsible soft flask for moving fast and light.

  • Collapsible, flexible, BPA-free TPU 3L soft flask
  • Secure wide mouth lid for easier refilling, filtering and drinking
  • Measurement scale for quick reference

The backpacker’s magic trick isn’t finding a penny behind your ear. It’s the 3L Hydrater. Watch it transform! The more you drink, the smaller it gets...

The 3L flask has a wide mouth lid for refilling, filtering and drinking with ease. And it has a measurement scale so you know how much you’ve drunk with just a quick glance.

The Hydrater is made from durable TPU so you can bash it about worry-free, whether that’s for campsite hydration, summit slurping, or mid-ride chugging. It can hold cold and warm (up to 60 degrees) water. And it’s BPA-free with a reinforced rubberised nylon handle. You can strap it, pack it or carry it.

Weighing just 88g, the soft flask is designed with overnight in mind. The Hydrater has a slim body for easy packing. A 3 litre flask offers the ideal capacity for drinking, cooking and cleaning for a campsite dinner and breakfast.


Key Features

  • Collapsible, flexible, BPA-free TPU 3L soft flask
  • Secure wide mouth lid for easier refilling, filtering and drinking
  • Measurement scale for quick reference of remaining capacity
  • Can hold cold and warm (up to 60 degrees) water
  • Reinforced rubberised nylon handle for convenient carrying and stashing
  • Functions as a sleeping bag warmer when you’re curling up after a chilly day
  • 3 Year Alpine Bond

Vital stats









Origin: China

Sustainability and Product Care

Product Care Information

Clean after use in soapy water. Allow to fully dry before storing.

We have dedicated Repair Stations in our stores and we're fully equipped to breathe new life into your old kit. This includes spare parts, patches, new zips and wash and reproofing of your down and waterproofs. Pop into any store or contact us online for more info.

Alpine Bond
If one of our products does not meet your expectations upon delivery, or if during its lifetime does not live up to the demands placed upon it, please return it to us for repair, replacement or refund. If the problem is our fault then we will do this to your satisfaction. If it’s your fault then we will help out the best we can. Find out more about our Alpine Bond here.


How It Is Made

PVC and BPA FreeThe 3L Hydrater is PVC free and BPA free.

Where It Is Made
Our products are made in the best factories in the world. We know the factories personally and they have all signed up to our Code of Ethics in our supply chain. This includes the Ethical Trading Initiative base code, fair pay, safe working environments, no child labour, no modern slavery, no bribery or corruption, no materials from conflict zones and humane farming methods.

All our factories sign up to our Code of Conduct. Find out where we make our product by visiting our Factories of Alpkit factory zone.

Reducing our carbon footprint
We are carbon neutral under PAS2060 and offset our Scope 1, Scope 2 and Scope 3 operations and transport emissions. We recognise that offsetting is not part of the solution but a point to pass through on a journey to Net Zero. Carbon Neutral is just a step in that journey.

We have joined the Science Based Targets Initiative which sets independent targets for us to achieve to do our bit to limit global warming to 1.5°C. Our targets are to halve our Scope 1 and Scope 2 emissions by 2025 based on 2018 base year and reduce our total carbon intesnity by 15% every year to achieve genuine net zero by 2050.

End of life
When your partnership with this product is over send it back to us and we will pass it on to someone that needs it through our Continuum Project.