Sophisticated design for maximum weight capacity - that’s the Terraframe 3 by Mystery Ranch! This walking backpack has a capacity of 51 litres and combines two of Mystery Ranch’s very own developments. The patented 'Overload' feature has been enjoying immense popularity in the hunting and military fields for many years. To use this feature, detach the stuff sack from the top end of the carrying frame, fold apart both parts and spread them out flat. Place what you need to carry on the carrying frame and fold the stuff sack over it. Then, reattach it to the carrying frame using the compression straps. The Overload storage can also be fully extended depending on size and requirements. The 3-zip design is another useful feature of the Terraframe. It enables quick and easy access to the contents of the rucksack. The rucksack also has two zip pockets in its lid for easy accessible storage for all kinds of little bits and pieces. The two external pockets are ideal for storing water bottles. For optimum hydration, the rucksack is compatible with hydration systems of up to three litres. The Terraframe 3 by Mystery Ranch is designed for heavy loads and has an impressively comprehensive design!