Scars are typically 2-3 inches and the heart device can cause a bulge in the silhouette of the body. Most people will not notice it through clothing. It may be seen when wearing clothes like bathing suits or strapless dresses. One unique case is a leadless pacemaker, as this is placed in the heart via a vein in the leg. The procedure requires no chest incision, and unlike conventional pacemakers, does not create a scar or bump under the skin.