I purchased an Osah Drypak 30 litre weekender. I am working as a hammerhand/labourer working for a construction company up grading the Mount Taranaki Summit hiking track living and working up the mountain in Taranaki, North Island, New Zealand. At the start of each 7 day rotation we get choppered up to the site and at the end of the rotation we have a 2.5 hour hike out. I walk out using the Osah Drypak 30 litre weekender. The weather can be extreme with lashing torrential rain and crossing streams while you are walking under powerful waterfalls.The weekender has exceeded my expectations being extremely comfortable to wear and kept the contents dry in driving rain.
Great backpack, waterproof and very comfortable on the back and shoulders.