Foldaway Tote Bag
No need to empty your rucksack/daypack to go shopping after a day's hike. This neat and durable tote bag opens out to be big enough to carry large quantities of water and food. It folds back into a small flat square when you're finished shopping, and then can be easily tucked into your rucksack or daysack. An invaluable addition to any kit when on the road.