OMM Classic 25 Rucksack

OMM Classic 25 Rucksack
Incl. 20% Tax

Availability: Out of stock

The Classic 25 is the smaller of OMM's very well specified Classic sacks, and is regularly seen on the backs of those competing in long distance races such as the Original Mountain Marathon. However its low weight, impressive feature set and low price make it a good choice for walkers and gram counting campers.



OMM Classic 25 Running Pack

The Classic 25 is the smaller of OMM's very well specified Classic sacks, and is regularly seen on the backs of those competing in long distance races such as the Original Mountain Marathon. However its low weight, impressive feature set and low price make it a good choice for walkers and gram counting campers.

There are so many practical little features on the Classic that it would be impossible to list them all. Rest assured that should you need to connect anything or store anything that there will be a strap, buckle or pocket in just the right place.

The lightweight back panel is stiffened by an OMM Duomat 45, which when attached to a second Duomat (sold separately) makes a full length closed cell foam sleeping mat.

'It's versatile, extremely tough and durable, lightweight and capacious. Job done.' Runner's World

The Classic 25 comes with the same set of features as the Classic 32 but has a shorter back length and lower capacity.

  • Weight 670g (stripped 540g)
  • LeanWeight Chassis provides high strength despite an exclusively fabric construction
  • UGR (Universal Gear Rail) allows you to carry everything from an LED light, to skis with ease
  • Hydration bladder compatible
  • Supplied with a Duomat 45 half length sleeping mat (80 x 45 cm)
  • High wicking mesh panels to hip-belt and back
  • Whistle on chest strap
  • LINK buckles allows attachment of smaller OMM packs and waist pouches
  • MSC mesh compression panel compatible (sold separately)
  • Compression
    • Side elastics with reflective thread
    • Front stretch mesh pocket with compression
  • Pockets
    • 2 zippered belt pockets
    • 2 mesh side bottle pockets
    • 1 stretch mesh front pocket
    • 2 flap pockets
  • Back length: 45 cm
  • Volume: 25 litres
  • Fabric: 80g/m² 210T ripstop
  • Reinforcements: 140g/m² HTTF (High Tensile Texturised Fabric)


Activities Camping, Climbing, Running, Travel, Ultralight
Weight 670g
Capacity (litres) 25
Brand OMM
Colour Green
Gender Unisex


We try to keep the site updated with products that are in stock and despatch within 1-2 working days (Mon-Fri). Occasionally items ordered may be out of stock. If this should happen we will contact you to let you know when we will be able to despatch your order.

Please note that all deliveries are made between 08.00 and 18.00 Monday to Friday and may require a signature.

Free Delivery

Orders are typically despatched with Royal Mail Tracked 48. Please note that this is a guideline only as a different delivery method may be used depending on the size/weight of your order – if you would like any more information on your delivery please contact us. Please note that our postal services are dealing with unprecedented numbers of orders just now; there may be a short delay in your order's arrival but will will get it to you as soon as possible.


Click and Collect

At checkout, please let us know you'd like to collect your order from our Hathersage store, either in the Comments box on the order page or by emailing us at [email protected], quoting your order number. Click and Collect items are available to pick up Monday – Friday, 9:00 am – 5:00 pm (excluding Bank Holidays), one working day after your order is confirmed.

When your item is ready to collect, you will receive a confirmation email; please either bring a print out of this or show us the email on your phone. You will also need to bring a form of ID which shows the billing address for your order.

Please collect from the back door at the end of Outside's customer car park:

Outside Ltd
Main Street
S32 1BB


Online Only Range

“Online only” products are not available for immediate despatch but you will still normally receive these items within 5-7 days of placing an order. If there are likely to be any further delays we will of course be in touch. These products cannot be purchased in our store.


Next Day Delivery - £5.95

Orders placed BEFORE 2pm Mon-Fri will be despatched the same day, usually with Parcelforce (requiring a signature). Any Next Day orders received after this time will be despatched the following working day. Please note any orders placed AFTER 2 PM on Thursdays will be despatched on Friday, but not delivered until the following week. Next Day isn't possible on Bank Holidays. If you have a mobile number on your account you will receive SMS notifications regarding delivery (UK mainland deliveries only).

Redirection of your order once despatched

We regret to say that we are unable to change the address or postcode on a parcel once it has been despatched. We therefore recommend that you check your delivery address and postcode carefully before completing the order as this will not be checked by us before despatch. We also recommend that orders are sent to an address where someone will be available all day to receive the parcel, e.g. a work address.


European and International Delivery 

International service suspended

Unfortunately international orders are temporarily suspended due to the impacts of Coronavirus and Brexit related regulations. We are working to restore normal service when we can - please email [email protected] if you would like an update when we resume international services. Please accept our apologies for any inconvenience. 

BFPO Delivery

We are happy to deliver most items to BFPO addresses. If your location means that your purchase is VAT-exempt, we are happy to deduct the VAT from your order before shipping. Please make sure that you include your BFPO number in the Postcode field on your order so we can verify the VAT-exemption.

When filling in your details on the website, please enter your card holder address as normal, and the delivery address in the following format:

First Name/Last Name   

Your name/rank

Address Line 1

Your appointment or unit


Your barracks or PO Box no.


Your BFPO no.


Choose BFPO if you are VAT-exempt, United Kingdom if you are not

Delivery is free to BFPO addresses, however we may be unable to ship certain items due to their size, weight or value. We will contact you if this is the case. If you have any problems or queries, please contact us.


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