I bought a Karrimor Sierra 10 rucksack last summer to replace a Karrimor Sector 10 to use as a backpack when cycling and for walking to carry items such as a camera, a small anorak, lunch and a small flask. I rated the Sierra 10 acceptable only because it is waterproof. I have found it alot less spacious than the Sector 10. The front pocket can only store a few small and very flat items - another disappointing property. I hope in vain that Karrimor may reintroduce the Sector 10 again. It was a very good rucksack - maybe a bit old fashioned in it's look but far more useful than the Sierra 10.