There are several advantages to having a cosmetic device. Having an arm/hand/finger that looks similar to the person?s sound body part can provide psychosocial benefits to the user ? that is, can help them feel more at peace with their limb difference. This can be especially helpful to those who have lost part of their upper arm in a traumatic way. For anyone with a limb difference, it can improve their confidence to be out in public, and help with their overall personal body image. It can help the individual feel more ?whole? and take the pressure off going into public with a prosthesis that is more obviously a device.