Alternative names include haversack from the German Hafersack meaning "oat sack"[1] (which more properly describes a small cloth bag on a strap worn over one shoulder and originally referred to the bag of oats carried as horse fodder), Kraxe (a German rucksack with a rigid framework), and bergen (a large load-carrying rucksack, from a design issued by the British Army during the Second World War).[2] In fact, Britons used to call Alpine-style backpacks "Bergen rucksacks", maybe from the name of their creator, Norwegian Ole F. Bergan, combined with the name of the Norwegian city of Bergen.[citation needed] https://i.pinimg.com/originals/c1/d7/50/c1d750411a73750178e06d446be6b92d.jpg

In addition to their use in outdoors pursuits, backpacks are sometimes used in other sports as well. Hydration packs, sometimes used by athletes and military personnel, carry water (in either a bladder or a rigid bottle) and have a tube connected to them from which the wearer can drink without removing the pack; this feature is also included in some more general-purpose hiking backpacks. Backpacks that carry skateboards have also become more popular in the youth culture. https://i.pinimg.com/236x/49/e9/4a/49e94a1806aaeb8e910b53cdee7656d2--elf-dupes-drugstore-makeup-dupes.jpg
Many police tactical units, as well as players of military-style combat games such as paintball and airsoft, use these military-style tactical backpacks and webbing for storing gear and ammunition. There is also a small but thriving industry devoted to creating historical reproductions of military gear; such companies generally produce period-appropriate uniforms and other gear in addition to backpacks. https://i.pinimg.com/236x/85/6b/4f/856b4fb0e3103e7d485580c069f05719--thirty-one-consultant-thirty-one-business.jpg?b
The other type of external frame which recently was proposed, is made from composite plastic which is not flexible like current backpack straps and also it is a kind of material that can be shaped like human spine curvature. In this type of backpack, load directly transfers to the shoulders through the non-flexible straps. This non-flexible structure diminishes the momentum at lumbar region of the back. Strap curvature is shaped close to spine curvature and there are two flexible drawstrings to prevent backpack movement in transverse plane. The straps of this backpack are wide enough to distribute the pressure on shoulders and also a white glass wool layer is added to the internal part of them to absorb dynamic forces, which could be produced through walking. This backpack type is an experimental sample that need further options to be prepared for usage. One of the benefits of backpack with external frame is preventing the spine to incline forward during walking that would be helpful in preventing damage of long term backpack carrying.[4] https://i.pinimg.com/236x/85/54/1b/85541b9681a49a5d3a5a658040044ff9.jpg
Finding the perfect 31 Gifts product in a color or pattern that clashes with your style is a big letdown - but it’s a problem that never needs to happen when you view the 31 Gifts catalog. With several different prints available for each item, even your base selection will reflect your style preferences! From there, embroidered personalization adds initials, names or phrases, allowing you to pick even more options - thread color, font, symbols and more - to truly personalize your product. Thirty One Gifts’ collegiate line makes a wonderful gift or special self-indulgence for college sports fans, and even Fido can get in on the fun with beautiful leashes that match popular Thirty One Gifts patterns. https://i.pinimg.com/originals/cb/0a/12/cb0a12ebd911a1ced32c2a32d78b3644.jpg
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