Minimize stress on the lower back with the Douglas(R) CP 4" Removable Back Plate. Cushion backing absorbs impact. Extra grommet holes are included to raise or lower the back plate for easy adjustment. Protect yourself from injury with the Douglas(R) CP Removable Back Plate. Features : Plastic plate Cushion backing Extra grommet holes Supports lower back Available in 4" model only One size fits most Style: AC-BP4-BLKBLK