A slipper designed to leave the wearer's toes exposed for enjoyment or for treatment such as a pedicure is provided. The slipper has a sole which may be of flexible and pliable material or may be relatively rigid. A cushioned insole may also be used and connected to the sole. At the margin of the rear...http://www.google.es/patents/US4644669?utm_source=gb-gplus-sharePatente US4644669 - Toeless slipper
