? ??? ??? ?? ? ?? ???? ???? ??? ???? ?? ?? ?? ?? ?? ????? ??? ? ???, ?? ???? ?? ??? ??? ??? ??? ??? ?? ?? ?? ?·??? ??? ?? ? ????.? ??? ??? ?? ??? ?? ??. ??? ???? ??? ??? ??????, ??? ??? ? ? ????.OverviewThe 3D Backpack is good for students in school or College and in addition appeals to present day mobile pros by having an active lifestyle and a f