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T.B.S. back system is made from one time moulding High hardness EVA. It is
designed according human back situation while carrying backpack. It is
comfortable, close-fitting. The back system inserts a high hardness Fiber
board with a support of two high hardness aluminum strips. This construction
ensures stability and comfort ability. Removable waistband reduce the weight
of the backpack while it is not useful. Easy adjustable waistband makes
fastening or loosening waistband easier.