Backpack mountain "Edelweiss-4" volume of 90 liters is designed to carry property fighters of special and intelligence units of all kinds of troops and special services, operating for a long time in isolation from the main sources of supply, as well as tourists, rescuers, travelers. The backpack is well balanced (arranged according to the classical scheme), which allows carrying a significantly loaded backpack for a long time. The backpack has a main capacity (with a removable, adjustable partition the main capacity is divided into two compartments), a flap pocket, four (or three, depending on the modification) side pockets and two pockets formed by the walls of the main capacity and side pockets. The main tank is equipped with a tube with a retractable cord and is covered by a valve that closes with a zipper with a strap. For fastening of additional equipment outside the mountain backpack (including the valve) is equipped with sewn polyamide tapes. Comfortable wearing a backpack for a long time is provided by a complex suspension system of high reliability. Backpack has adjustable, detachable straps with straps protivootecona, breast screed and powerful waist circumference with the waist bag, and quick-release polymer lock for durability and hardiness. The suspension system allows to adjust the straps relative to the volume of the main tube due to the sewn on the back wall of the mountain backpack belt loops (to which a special loop and straps are attached). Additional convenience of carrying a backpack and distribution of loads is provided by fastening the adjusting straps to the lumbar girth (in contrast to the traditional attachment to the main capacity of the backpack). In extraordinary circumstances, for virtually instantaneous release from of a backpack from any position, the straps of a backpack with steel locks-the most original design. To achieve maximum reliability, all the most loaded and critical components of the backpack-adjusting buckles, buckles, self-Assembly, made of steel with a black , matte anti-corrosive coating. Secondary components - adjusting buckles of the straps in terms of pockets, quick-release valve locks are made of polymer of high strength and frost resistance. Quick-release lock belt girth can withstand loads up to 200 kg, and the belt tape, depending on the width of the stand to break from 800 kg. The backpack is made of polyamide fabric with water-repellent impregnation.