Footwear includes an upper disconnected from the sole on at least a portion of one lateral side of the sole to enable a foot to enter the footwear laterally through a side gap. The foot may be held in place, in part, with a resilient foot holder extending over the top of the foot. A lateral motion of...http://www.google.co.uk/patents/US20030009916?utm_source=gb-gplus-sharePatent US20030009916 - Side entry footwear
