The provided reference only describes attaching the MotionAir Air Jacket to the Motion3 Body Protector; it does not provide a complete guide on fitting an air jacket. Therefore, I can only describe the attachment process.
To attach a MotionAir Air Jacket to the Motion3 Body Protector:
- Locate the loop on the body protector in the middle.
- Use the included card strip to help align the loops.
- Slide the card strip into the second Arrow jacket loop.
- Slide the card strip back through the body protector loop.
Because the provided context is limited to this specific attachment procedure and does not explain how to generally fit an air jacket (i.e., ensuring correct size, inflation cartridge placement, etc.), I cannot give a complete answer. General air jacket fitting depends heavily on the specific brand and model.