This removable 4" Back Plate is the right way to get protection from those devastating lower back hits. Douglas has added extra grommet holes that allow you to raise and lower the plate. Sz: One size fits most.
The Douglas CP 4" Back Plate has dimensions via follows: 5.25" long x 12" wide with the straps being 4" long. The grommet holes are placed 1" apart and depending which grommet hole you chose would depend on how low it hangs from the shoulder pads.