The Other Arms Rucksack. Designed for use by branches of service like engineers, signals, tank crew and so forth that might not need the capacity of (or have the space for) a full 100L bergen but still have sh*t to shift.

This one is from 1993. Used but working just fine. 

• Dimensions : 55 / 70 x 40 x 25cm
• 70 Litre Capacity (main pack)
• 1 x Double Ended Zipped Access Velcro Double Layered Storm Flap
• 2 x Padded Adjustable Shoulder Straps
• 1 x Padded Adjustable Waist Band
• 8 x Male Quick Release Clips to receive
• 2 x Bergen Side Pockets/Rocket Pouches
• 4 x Zips to receive 2 x Bergen Side Pockets/Rocket Pouches
• 4 x Adjustable Quick Release Straps that allow Sleep Mats to be Stored on either the Top or Bottom of the Sack
• 2 x Heavy Duty Webbing Handles
• 1 x Velcro Flap that Covers and Hides the Shoulder and Waist Straps for Travelling
• 2 x PLCE 10 Litre Side Pouches (20 litre capacity)
• Infrared Resistant Material (IRR)

Cost includes shipping! Thanks for looking.