Footwear with elastomeric or plastomeric soles, such as boots, sports footwear or leisure footwear, has distinguishing elements or decorations attached to it. The elements comprise a flanged body held by means of a flexible retaining element, which may be part of the footwear itself, which has an aperture...http://www.google.com/patents/US4712319?utm_source=gb-gplus-sharePatent US4712319 - Footwear with detachable visibility aids
