Foam parts kit allows the replacement of Carbon Bionic Neck Support foam pieces when damaged All pieces are die-cut; double-sided adhesive included X-Strap is a lightweight strap system for securing the Carbon Bionic Neck Support or Bionic Neck Support SB to the rider A-Strap is a substantial strap system that secures Carbon Bionic Neck Support or Bionic Neck Support SB to the rider Attachment plate allows the replacement of the Carbon Bionic Neck Support or Bionic Neck Support SB keyhole plate should it be damaged in an impact