Edit in JSFiddle

var draw = SVG().addTo('body').size(300, 130)

var path = draw.path('M0 0 H50 A20 20 0 1 0 100 50 v25 C50 125 0 85 0 85 z')
path.fill('none').move(20, 20)
path.stroke({ color: '#f06', width: 4, linecap: 'round', linejoin: 'round' })