How to choose and buy a backpack
Even the most humble person can not escape from the thousands of necessary details that have to constantly carry around. Sometimes we have to wear for weeks, sometimes for months, and did not comb and toothpaste, and supply of food, special equipment, tent, sleeping bag, etc. If this account mountains, explore caves, traversing avalanche slope to ski, or just carry with giving 100 kilograms nurtured in the throes of potatoes, the acute problem of choice of packaging to carry these heavy loads, and one that hands remain free. Since that time, mankind has invented backpack with straps, do not stop great rucksack revolution.
Types of backpacks
There are an infinite number of modifications of backpacks: from fine maiden, the size of a fist to the huge trunk, which can carry a canoe to beginning of the route. We'll stop our choice of tourist backpacks designed for different kinds of active outdoor recreation, from one day to several months.
Backpacks are divided into many groups, but of course the main division, of which largely followed the appointment of travel backpack - in volume, measured in liters. To leave one day at the beach with sandwiches suitable travel backpack 18 - 25L. When choosing a backpack, note that his back was always soft. Usually - this dubbing back penopolietilenom, as well as a variety of breathable, sweat-absorbing, soft to the touch system, used on backpacks known foreign firms. Further research should straps: They should be soft, but not to press, have "anatomical" rounded shape and easily controlled. Backpack be sure to try on, and filled (now in modern stores all demonstration Travel backpack filled with marsh).
Next is an extensive group of backpacks from 30 to 55l, intended for small trips and hikes, large enough to carry heavy loads on dacha in the woods, as well as non-durable climbs in the campaigns for two or three days. It plays an important role form. For example, a well-known throughout the travel backpack remains the lot of gardeners and mushroom pickers. Description of this model in stores speak for themselves: "cottager", "Forest Man", "Grandfather" etc. This is the most conservative and unchanging model. Is that now to produce it practically does not use a tarp, but switched to lighter, waterproof and rugged materials - or Shate avizent. All other travel backpack meyut elongated, cigar-shaped. The experience of generations showed that this form is the most user-friendly, perfectly placed on his back and does not restrict movement. Sports travel bag from 35L should already have Time to be able to unload the shoulders. And when fitting zone should be located not at the waist and thighs, on the bones of the pelvis, because they can withstand long load. If the primary pressure accounted for only on the shoulders, then quite quickly there is compression of the spine starts to hurt back and there is a rapid exhaustion of the organism.
Backpacks of 60 to 90l already can be called serious hiking travel backpack mi calculated depending on the design of hikes of varying duration and complexity. Capacity from 100 to 140l are expeditionary travel backpack for long winter hikes or necessary water travelers to transfer kayaks. The most common materials for small backpacks to 35L are Nylon Oxford, Shate, avizent. These materials have a waterproof properties, strong and yet light enough. For the production of sport backpacks around the world now uses material from the company Cordura Dupont Kevlar thread, but for a small travel bag, he was crude and heavy. Often, in order to facilitate the weight of backpacks and 50 - 60L making of lighter synthetic materials, and material Sordura are only used on the bottom. There are several varieties of material Cordura: Cordura 600, 700 etc. more light and soft and Cordura 1000 - more rigid and resistant to wear. That it is often put on the bottom of the travel bag. All species are water-resistant Cordura cover, but are not absolutely impermeable material, so for studies of caves, canyons or on slopes rafting on the turbulent rivers use special travel bag sealed with taped seams, or as they are called "draybegi.
Another, the most important criterion for selecting the travel bag is the structure of its dorsal suspension. Note that a good travel backpack from 50L should have armor stiffness in his back, ie special duralumin plate, or frame, which makes the back stiff and can carry cargo, without harm for the spine, because while the main load falls on the basin. Most backpacks have a volume of "floating" suspension, ie length spins governed by a specific person, which makes travel bag more versatile.
The straps of backpacks are straight, crescent-shaped and S-shaped. The first type - the previous day. Such straps can freely move his hands. Most convenient individually bent S-shaped. But it will cost you a thicker dressing, or send a travel bag to someone, the curve can not come to the optimal place. Therefore, in the mass models used a small S-shaped curves of the straps or sickle-shaped, the divergence angle adjustable straps desirable. Straps should be neither narrow nor too broad. For the average person is optimal width of 6.7 cm, pinching-out down. Packing them should be soft, pleasant to the touch. At the same time, the strap should not wrinkle in any plane. Material at their edges should not crawl and razlohmachivatsya. For stuffing usually use different foam plastic. At lyamochnyh straps must be collapsible buckles and rings. Shoulder semiring convenient to carry camera or a camera, radio, ski, recreation hands, which sometimes include special loop.
A separate estimate accessories. Unfortunately, Russia's producers have not yet learned to make high-quality fittings, so preference is given to import samples, they are slightly more expensive but will last longer. We should not ignore such useful trifles as the presence of chest buckles, removable valve with external and internal pockets, as well as the lower basement, separated from the bulk of the travel bag removable membrane. This helps keep a wet tent or rope separately from dry and clean things that can be very useful.