Video thumbnail image

Muon 40L Hiking Pack


Our ref
Supplier ref

For fast-moving hikers pounding out the miles, this strong, streamlined pack is built to keep weight down, with ultralight features allowing you to pack more kit and cover longer distances.

Colour selected: Pewter-Graphene
Size selected: No Size
Size guide
Price challenge


Minimising weight so you can maximise your time on the trail, the Muon is the ideal companion for long distance thru-hiking and trekking with a refined kit list. The ultralight, ultra-tough fabric and lightweight back system keep excess weight down and are exceptionally strong, capable of supporting heavy loads with superb stability. Versatile and streamlined, the pack adapts to your needs, whether you’re looking to pack more gear, pick up the pace, or clock more miles.

As well as being durable and lightweight, the Spectra® Ripstop fabric is UV-resistant, perfect for hiking at high altitudes. The close-fitting TRI-FLEX™ carry system features a wraparound harness, shaped lumbar pad, and supportive hipbelt, providing reliable comfort that endures over long distances. You can adjust the fit using the forward pull hipbelt, which, along with the ultralight compression straps, helps to stabilise your load. The lower compression strap doubles up as storage, perfect for stowing your roll mat.

Grab kit quickly and easily with the simple roll top opening, which allows the pack to expand with larger loads and compress as you work through supplies. The large front stash swallows up extra layers, while side stash pockets and harness pockets provide on-the-go access to water and snacks. There’s also space for a 3L hydration bladder inside, and poles can be fixed to the outside of the pack when you need to keep your hands free.



  • TRI-FLEX™ carry system is light and stable with wrap around harness construction for optimal comfort
  • Shaped lumbar pad and supportive hipbelt provides comfort on long days
  • Forward pull hipbelt for easy adjustment and stability
  • Roll top closure allows pack to expand and compress as your kit changes
  • Top compression strap helps to stabilise the load
  • 2 harness pockets and 2 large side stash pockets provide on the go storage
  • Large front stash provides quick-access extra storage
  • Ultralight compression; lower straps ideal for carrying extra equipment
  • Large external and internal zipped pockets for secure storage
  • Collapsible and Z folding pole carry compatible
  • 3 litre H2O bladder sleeve with dual exit option
  • Webbing ladder on pack body for additional storage


  • Weight:0.895kg / 1lb 16oz
  • Main Fabric:100D (85% recycled) high tenacity nylon with Spectra® Ripstop 
  • Volume:40lt / 2440cu.in
  • Dimensions:65 x 33 x 30cm
  • Back System:TRI-FLEX™
  • Back Length:19" / 48cm

Delivery and Returns

We are a UK company based in Stevenage for over 45 years. All items shown 'in stock' are in stock, in the UK and ready for processing and dispatch with no extra charges, duties, or import tax. The price you see is the price you pay.

Country/Region Shipping Contribution Inc. VAT Carriage Paid Level Inc. VAT Delivery days
UK Mainland £3.50 £40.00 Approx. 1 working day
UK Highlands, Islands & Northern Ireland £3.50 £40.00 Approx. 2 working days
Click and Collect Free n/a Approx. 4 hours

We use Royal Mail Tracked 24-Hour Service and, for some items, the premium DPD service in the UK. Saturday, Sunday, and Bank Holidays are not DPD or Royal Mail working days.

We will inform you by email when your goods are out for delivery, and the message will contain a link to allow you to track your consignment via the Royal Mail Tracked 24 and DPD Predict service. If you provide a Mobile number, you should also receive an SMS text message.

United Kingdom

We deliver to all countries within the United Kingdom, including England, Wales, Scotland, and Northern Ireland.

Orders placed by noon on a working day (Mon-Fri) should be delivered by the end of the following working day in the UK. Please be aware sometimes factors beyond our control can delay delivery and next-day delivery cannot be guaranteed.

Deliveries to the Scottish Highlands and Islands, Northern Ireland and the Isle of Man take an extra day, so we ask customers to please allow 2-4 working days from the day of order to avoid any disappointment.

Notwithstanding this, we only sell from our stock which is ready to ship, all orders are treated as priority and get the fastest delivery possible, and we don't charge extra for this. In the UK, this means next working day for orders received by noon.

Channel Islands

We do not deliver to The Channel Islands. We apologise for any inconvenience caused.

European Union and International Destinations

We do not deliver to destinations outside the United Kingdom. We apologise for any inconvenience caused.