PRO-TEC Spiky Massage Ball Sale! from $9.95 Qty. This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Spiky Massage Ball for plantar fasciitisFirm massage ball provides deep tissue massageSpiky outer layer offers stimulating effect, increasing circulationExcellent tool for plantar fasciitisSize – 3” Diameter