The invention provides a foldable box design having a box flap locking system, comprising: a first flap having an edge with a generally trapezoidal shaped tab cut therein, wherein said generally trapezoidal shaped tab is defined by two inwardly projecting grooves; and a second flap that locks with the first flap, wherein the second flap includes an edge with a second generally trapezoidal shaped tab cut therein, and wherein said second generally trapezoidal shaped tab is defined by two outwardly projecting grooves.