- Drop-stitch knitting is a knitting technique for producing open, vertical stripes in a garment. The basic idea is to knit a solid fabric, then (deliberately) drop one or more stitches (i.e., draw a loop out from the loop below it, and so on repeatedly), producing a run (or ladder) in the fabric. The run will continue to the bottom (i.e., cast-on) edge of the garment, or until it encounters an increase, at which it stops.
Instead of being left open, the cross-strands of runs (the "rungs" of the ladder) can also be modified in various ways. For example, using a crochet hook, one can re-work them into larger knitted bights, e.g., by drawing four strands through the four below them, and so on indefinitely. As another example, the "rungs" can be bound up in different patterns using a contrasting yarn and a darning needle.