The large backpacks have been specifically designed to carry considerably more than your average every day backpack. They are perfect for backpacking and trekking across the globe, when you really do need to take everything with you! With capacities between 50 and 85 litres they really will accommodate everything you need for your travels from your sleeping bag, fleece jacket, your hiking boots and all the travel accessories you could ever dream of! A bag like the Puma 60-85 Rucksack would be the ideal long term companion for those about to embark on an adventure!