Your Gentle Roller comes complete with a Firm Feel Drive Roller.
The very popular Soft Feel Drive Roller. The softness of the polyurethane compound provides a cushioning effect under the felt bundle and gently increases the agitation of the fibres thus aiding the felting process. (Please read The Benefits of a Soft Feel Drive Roller)
They are designed to last a lifetime of felting under normal use. (They will stain if exposed to dye).