OMM Classic 25 Rucksack

25 Litres / Foam Stiffened Back / Hydration Compatible
Weighs 640g
Code: SS20358
  • £82.99
  • (FREE UK & EU Delivery)
+ In Stock Now   |   Usually dispatched within 24 hours

This modern Classic has been significantly updated and upgraded with durable materials and practical features. A versatile pack that works well for running events, fast packing and everyday use.

OMM says:

First developed in 1974 to a specification set by Olympian and later London Marathon founder, Sir Chris Brasher, The Classic was the first pack to look at weight as a key part of a bag’s functionality. Now in this latest iteration, The Classic balances, weight, accessibility on the move, comfort (at all speeds of movement) and multi-function componentry.

This is the pack that just works. Perfect for an OMM but also at home on something easier like the MDS, UTMB, Spine Race, Dragons Back, Grand2Grand, 4 Deserts, Fire & Ice Ultra, Everest, Camino. It just does everything really well…. It’s a Classic.

OMM's 2020 Classic 25 Rucksack balances durability and weight surprisingly well. The updated fabrics on this version are clearly a lot more hard wearing and easily stand up to the challenges of the mountains. Despite being a fairly simple, stripped back design this pack has some great features. The 25L capacity is ideal for ultralight overnight trips and more generally as a day pack for all seasons. 

There are really good sized hip belt pockets, a big secure lid pocket, side and rear stretch-mesh pockets and OMM's UGR (universal gear rail) for adding all manner of extra kit to the pack externally. The hipbelts are removable if you're trying to shed weight, as is the foam Duomat insert, which I leave behind more often than not as I'm never going to use it for sleeping on!

- Reviewed by BasecampGear

  • EVA padded shoulder harness 
  • UGR – Universal Gear Rail 
  • Large rear dump pocket 
  • Zipped pockets on lid & belt 
  • Stretch mesh bottle pockets 
  • Removable waist belt pockets - Inc. 2 x aluminium tent pegs (double as bottle openers)
  • Speed opening buckle system
  • Removable Duomat back pad/sleep mat
  • Weight: 640g
  • Capacity: 25 Litres
  • Back length: 45cm


  • 3D Mesh harness
  • Nylon 210T 
  • TPU re-enforced Nylon 
  • Duomat sleepmat /back-system
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