? ?? ??? ???? ??? ? ??? ????? ???? ????? ??? ????.  ??? ??? ??, ????????? ?? ????? ??? ??? ????? ??? ?? ???? ?????? ???? ? ???? ?? ?? ???? ?? ??? ??? ??, ????? ?????? ? ?????? ?? ????? ?? ??? ??? ???? ? ???? ??? ??? ??, ??? ?? ??? ?? ?? ???? ???? ? ????? ? ? ??, ???? ??? ?? ??? ? ????.OverviewThe 3D Backpack is good for students at school or Coll