#insole__innersole  the inner sole of a shoe or boot
  supertype:  sole  the underside of footwear or a golfclub
  part of:  boot  footwear that covers the whole foot and lower leg
  part of:  shoe  footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material

No statement uses or specializes insole; click here to add one.