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Chest strap. Attachment in the form of a strap with a clasp that connects the main straps of the backpack at the level of the user's chest. When fastened, such a strap keeps the straps at the same distance from each other and does not allow them to “scatter”. This provides additional convenience in the distribution of weight, as well as a secure fit on the body: it is almost impossible to remove the backpack without unfastening the strap. To adjust to a specific user, the chest strap is often made adjustable.
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Adjustment of the chest strap. The ability to adjust the height at which the chest strap of the backpack is located. This function allows you to choose the optimal location of the screed, taking into account the height and physique of the user; while the range of adjustment is usually quite extensive. However in some models (especially inexpensive ones), adjustable ties can spontaneously move when accidentally touched, knocking down the height settings; however, this shortcoming is usually not critical.
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Top straps. Tie-down straps located at the top of the backpack. They are mainly intended for fixing the upper valve, as well as for adjusting the volume of the upper part of the backpack, similarly to the side straps described below (moreover, such adjustment can also be provided in models that do not have a valve).
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Side straps. Tie straps located on the sides of the backpack — usually one on each side, however, in large tall models, there may be two on the side. The main function of such straps is to “compact” the backpack if it is not completely filled: by tightening the side ties, you can reduce the thickness of the backpack so that the contents are tightly fixed and not dangling inside. In addition, the side tie is convenient to use in combination with the bottle pocket for carrying long items, such as an umbrella or a mat: the lower part of such an item fits into the pocket, and the upper part can be fixed with a tie.
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Front straps. If the purpose of the ties described above is primarily to adjust the volume, then in the case of front ties they can be described as an additional fastening for placing things. They are two horizontal "belts" at the top and bottom of the backpack, under which you can fasten outerwear (similar to the principle with an elastic cord), a mat or other voluminous things, such as a snowboard. However, for the latter, these ties are not specialized and storage of the board in them is less convenient than in personal mounts. Naturally, the screed also fulfills its main function — it tightens the walls of the backpack, making its shape more “slender” and compact.
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Bottom straps. Tie-down straps located on the underside of the product. They allow you to adjust the volume of the lower part of the backpack (or the lower pocket), provide additional support and fixation of the contents, and in some models they can also be used as a fastener for carrying various items “on an external sling”: for example, you can put ties into stretched to the maximum size karemat and tighten the straps, securely securing the outer load.
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Waist belt. An additional device in the form of a belt, which, when fastened, covers the user's body in the area of the belt. The specific design of this part may vary. So, in relatively small backpacks, it is just a strap made of nylon or other similar material, and in large volumetric models, two wide and thick “petals” are provided that are adjacent to the user’s sides and are interconnected by a small strap with a clasp. Anyway, the main function of the waist belt is to redistribute the load: it allows you to transfer the load from the shoulders to the pelvic area, which is especially convenient when carrying heavy loads. In addition, such a device provides additional reliability of fixing the backpack on the body.
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TSA lock. The presence in the backpack of a lock that is compatible with the TSA (U.S. Transportation Safety Administration) standard. The peculiarity of this lock is that it has two ways of opening and closing — normal and "service". In normal use, the lock is opened and closed using a digital code; and for opening in a “service” way, a special universal key is used that is compatible with all TSA locks. Only customs officers, security services and other personnel authorized to inspect luggage have such keys. Thanks to this, if necessary, an authorized employee can check the contents of the backpack even if the owner is not nearby, while there is no need to break the lock and disable it — after the inspection, the backpack can be closed back. To date, TSA keys are used by US, Canadian, UK and Israeli Customs. So backpacks with such locks can be useful at least for traveling to these countries.
— Combination lock. It can be either a built-in fixture or an external padlock, hooked onto zipper sliders connected together. This feature makes it much more difficult to access the contents of the backpack and provides additional security if it falls into the hands of strangers. Of course, the lock will not protect the product from deliberate tampering, but it will become a serious obstacle for those who would like to search it quickly and discreetly.
Note that this item does not cover locks that meet the TSA standard — their
...availability is indicated separately in our catalog, and the features are described in the corresponding item below. — RFID protection. The presence in the backpack of a pocket or compartment with special protection against reading RFID tags. Such tags are used, in particular, in contactless credit cards using PayPass or PayWave technology; in this case, the communication range is several centimeters, and an attacker with a special scanner, getting close (for example, in a crowded transport), can read credit card data even through the fabric of a backpack. RFID protection prevents such troubles: it shields the cards inside the pocket, making them unscannable from the outside.
— Metal cable. A sturdy metal cable with a lock that allows you to attach the backpack to an immovable or heavy object, such as a lamppost in a park or a table leg in a cafe. For convenience and compactness, such an “anti-theft system” is often built right into the strap. First of all, it serves as protection against thefts “on a jerk”: a thief will not be able to quickly grab a “tied” backpack and run away with it, and it will be very difficult to quietly steal the prey. And cutting the cable, unlike the usual webbing, is not so easy, this requires a special tool and a margin of time. In addition, on some models, the cable can also lock the zippers in the closed position, preventing unauthorized access to the contents.
— Hidden zipper. In models with this feature, the zipper that closes the main compartment is located not on the outside of the backpack, but on the back. Thus, when wearing the product on the shoulders, the clasp is between the back of the backpack and the back of the user, and the thief will not be able to secretly unfasten the backpack and get to the contents from the owner.
— Protection against cuts. Protection that increases the backpack's cut resistance. Usually it looks like a strong metal mesh sewn into the lining of the product. Such a mesh resists well at least miniature devices like a sharpened coin, which are most often used by pickpockets; and in some models, it can even stop a knife or other “serious” cutting tool.
— Rigid front panel. Front panel (panel on the opposite side of the back), made of durable plastic or other rigid material, such as aluminium. Such a panel is almost impossible to pierce or cut unnoticed by the user, besides, it plays the role of a kind of "shell", protecting the contents of the backpack from bumps and falls. And in some models, the rigid panel also performs a decorative function, giving the backpack an original look; this is especially useful if the product belongs to the "gaming" series, suggesting an unusual, eye-catching style.The maximum diagonal of a laptop that can fit in the corresponding compartment of the backpack. Note that the average (standard) diagonal for modern laptops is 15.6", and most backpacks have
a 15" laptop compartment. However, there are also more voluminous models that can accommodate a
17.3" or even 18.4" laptop. At the same time, compact models are also presented: there are
backpacks with a compartment for a laptop 14",
13" and even smaller.
Note that the
lack of a laptop compartment in itself does not prevent using a backpack to carry a laptop, however, in this case, the maximum allowable size of the device will have to be specified according to the dimensions of the backpack.
