Backpacking, mountaineering, and general outdoor rucksack from Mystery Ranch The Terraframe Tri-Zip a pack purpose-built for outdoor backpacking and mountaineering needs. Designed for carrying heavy and awkward loads and combing two of Mystery Ranchs signature technologies the 3-zip and Overload this the ideal pack for any outdoor excursions whether going light or going big.The 3-zip design allows rapid, easy access to all your gear. The standout feature of this pack the Overload system. Normally utilised in Mystery Ranchs working packs for military use, this internalexternal hybrid carbon fibre frame allows the bag to be removed off the pack frame. This feature allows for the overload of the frame for additional bulky loads that wont fit into the cargo space of the bag. This intuitive design makes the pack incredibly versatile in terms of what and where it can carry. The Terraframe 3-Zip an incredibly versatile pack for any manner of excursion and utilises incredibly innovative technologies.