Innerspring coils for innersprings for mattresses and other reflexive support structures, have generally helical coil bodies and at least one non-helical segment or step which extends between one or both axial ends of the coil body and one or both of the coil ends. The step or steps may be linear or non-linear, and parallel to or angularly disposed with respect to a longitudinal axis of the coil body. When located proximate to a coil end, the step extends out of the plane in which the coil end lies. One or more steps may alternatively be formed intermediate to helical turns of the helical coil body.