Aonyx 25 Waterproof Backpack

Built for British weather. Ready for everything else.

Fully welded waterproof main compartment
No stitching. No leaks. Keeps your kit dry in heavy rain and unpredictable conditions.
Built for everyday carry
Lightweight at 1.1kg with padded straps, airflow back panel and a padded 13" laptop sleeve.
Ready for anything
From day hikes and dog walks to commuting and weekend adventures — one bag that handles it all.

£59.95 GBP

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Available now! Order yours today with free delivery.

Color Forest Green Stealth Black Sandstone

"This is amazing for single day hikes in the hills and rambling about, I've even done a river crossing with this bag on my back."
Tom

Expedition Proven. Everyday ready.

The Aonyx 25 was Ed Pratt's primary bag on his Source to Sea River Thames challenge — a 19-day endurance expedition documented to millions on YouTube. Used daily in wet, demanding conditions throughout the journey, it protected essential kit without fail.

If it holds up on a 19-day river expedition, it'll handle your commute.

Watch the series on YouTube.

Built for the kind of weather that ruins ordinary backpacks.
The Aonyx 25 is a fully welded waterproof backpack designed for daily outdoor use in unpredictable conditions. Its 25-litre main compartment keeps your essentials dry in sustained heavy rain, muddy trails and year-round British weather.

Roll-top closure. Reliable seal.
The roll-top design provides a clean, reliable waterproof seal with no zips to fail and no weak points to leak. Roll down twice, clip across, and your kit is protected — whatever the weather.

Organised for everyday carry.
An internal padded laptop sleeve fits devices up to 13". Comfortable enough for the commute, practical enough for a full day in the hills.

Comfortable for longer wear.
Padded shoulder straps with D-ring attachment points, a sternum strap with emergency whistle and a padded foam back panel with airflow channel make the Aonyx 25 comfortable across longer days and heavier loads.

Flexible external storage.
A water-resistant front zip pocket keeps smaller essentials accessible. Two exterior bottle pockets, elasticated front webbing, compression straps and reflective detailing round out a bag built for real use in real conditions.

Choosing between the Aonyx 25 and Caiman 40?
The Aonyx 25 is designed for everyday waterproof carry — commuting, day hikes, dog walks and travel where laptop protection matter.

If you need expedition-grade durability, more external gear carry and performance in prolonged, exposed conditions, the Caiman 40 is the better choice.

For a detailed breakdown of capacity, structure and real-world use, read our Caiman 40 vs Aonyx 25 comparison guide.

View full details

Order with confidence

Secure checkout
All payments processed securely through our website.
Fast UK delivery
Free UK shipping. Most orders arrive within 3 working days.
Field-tested. Built to last.
Used on real expeditions. Designed for years of hard use.

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Aonyx 25 Waterproof Backpack

Product Information

Care Guide

Rinse any dirt or salt off with fresh water.
Dry thoroughly before storing.

Additional Information

Electrical items such as mobile phones should be placed inside a suitably IP rated container within the dry bag to avoid accidental water damage.

This rucksack is not rated for submersion.

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Testimonials

★★★★★
Amazon Expedition Proven

Just returned from an expedition into the Amazonian jungle in Guyana, fly fishing for Arapaima.
Bought the Aonyx 25 waterproof backpack to protect expensive gear from the elements ... item performed flawlessly.

JDA

Purchased the Aonyx 25
★★★★★
Reliable in Real Conditions

Fantastic product. Purchased this rucksack for Wildfowling trips as some of my friends have them.
Great product. Easy to wash down. Quick to dry. Keeps all the contents dry. Pockets for flask and water bottle are great.

Peter Catling

Purchased the Caiman 40
★★★★★
Monsoon Tested at Mont Blanc

Bought two 60L waterproof duffels for our trip through France and Italy. We drove down to Mont Blanc with
both bags strapped onto the luggage rack. Went through a monsoon on first day down to Mont Blanc and the bags were fantastic. Everything inside bone dry.

Nigel N

Purchased the Aonyx 60

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Fortitude 40 Backpack

Product FAQs

🙋

How long does delivery take?

We aim to dispatch orders on the same or next working day. Free delivery takes 2-4 working days. Express delivery takes 1-3 working days.

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How is this bag waterproof?

The main body of the backpack is made from a PVC tarpaulin material, which is completely waterproof. Rather than using traditional stitched seams the Aonyx has welded joins which effectively make it seamless to the roll top.

🙋

Is it submersible?

No we don't recommend full submersion of this backpack as it is a roll top and has no zip seal.

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IS the front zip waterproof?

No, it's only water resistant.

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