Ideally, you want the straps of the MM to fall about 4-5" below the arm pits. Optimum fit will ensure the most comfort long term. If the MoneyMaker is worn too loose it causes the cameras to swing and sway too much, which puts pressure on your lower back while at the same time the straps will tend to move and slip more. When worn properly, the MoneyMaker will be anchored to the body and actually help to correct poor shooting posture by pulling your shoulders upright and back, keeping you and your cameras in line. So when the main straps are around 4” below the arm pit area, this in most cases will place the clip that attaches to the camera right around your waist line. So there should be a good amount of arm bend when your hand is on the camera at resting position and this is what you want!