MOBILITY AND COMFORT
Once the proper plate size has been determined, it is critical that plates be worn in the correct position on the body so as to allow maximum protection with minimal discomfort.
When in a standing position, the top edge of the plate should rest at the level of the suprasternal / jugular notch (the soft spot right above the sternum). When your finger presses in that spot, the top edge of the plate should touch the bottom of your fingertip.
Where the bottom plate edge rests depends on the wearer’s physical height. To insure protection of vital organs and vessels, the bottom edge of the front plate should extend to the bottom of the rib cage, or approximately 4.5 inches (114 mm) from the top of the service belt when standing. For comfort when seated, the space between the bottom plate edge and the service belt closes naturally preventing the insert from riding up into the neck area.
A properly fitted torso plate should not interfere with the comfortable movement of the arms and shoulders.
If a plate is too large it may impede mobility and result in difficulty holding, aiming or discharging a weapon which can result in fatigue and inaccuracy.
POSITIONING THE BACK PLATE
When positioned properly in a plate carrier, the top and bottom edges of the back plate should align with the top and bottom edges of the front plate when viewed from the side. This coverage area provides maximum protection from the rear as well as user comfort while seated or standing. For additional back protection, some users prefer a full cut plate for the rear facing pocket which provides more upper left and right corner area coverage.