Arm restraints are designed to keep a driver's arms inside the vehicle during a roll-over. They are required by most North American racing organizations in open cockpits.
Each arm restraint has a loop at the end of the strap. Slip the metal tab of one of your harness belts through the loop so the strap is captured when the harness is fastened and released as soon as the harness is released. Can be used with any lap belt, Camlock or Latch & Link. These restraints can be adjusted so they do not restrict the arms during normal driving. SFI 3.3 approved. Sold in pairs (enough for both arms).
Tip: Do not pull the seat belt webbing through the loop of the arm restraint. Doing so will make it more difficult to get out of the car in a hurry. You want the arm restraints to be free immediately when you release the harness buckle.