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Backpack
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===Internal frame packs=== The internal frame backpack is a recent innovation, invented in 1967 by [[Greg Lowe]], who went on to found [[Lowe Alpine]] and Lowepro, companies specializing in backpacks and other forms of carrying bags for various equipment.<ref>{{Cite web |url=http://www.lowepro.com/innovation |title=Innovations |publisher=Lowepro |url-status=dead |archive-url=https://web.archive.org/web/20130630142251/http://www.lowepro.com/innovation |archive-date=30 June 2013 |access-date=22 October 2008}}</ref> Lowe's innovation also featured the first side compression straps, the first modern sternum strap, and the first load stabilizers.<ref name="Doran-Ramble On" />{{rp|209}} Internal-frame packs have a large fabric section around an internal frame composed of strips of either aluminum, titanium or plastic, sometimes with additional metal stays to reinforce the frame. A complex series of straps works with the frame to distribute the weight and hold it in place. The internal frame permits the pack to fit closely to the wearer's back and minimizes shifting of the load, which is desirable when participating in activities that involve upper-body movement such as scrambling over rocky surfaces and skiing. However, the tight fit reduces ventilation, so these type of packs tend to be more sweaty than external frame packs. The internal construction also allows for a large storage compartment; a few lash points (including webbing loops and straps for sleeping bags and other large items) may be present, but as the frame is completely integrated, it is difficult to securely lash larger and heavier items which do not fit inside the compartment to the outside of the pack. Internal frame packs originally suffered from smaller load capacity and less comfortable fit during steady walking, but newer models have improved greatly in these respects. In addition, because of their snug fit, the improved internal frame models have largely replaced external frame backpacks for many activities.
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