Just ordered a pair of these...
http://www.billys.co.uk/english/group.php?prod=pdwi-insteps&PHPSESSID=oq0qjgl941g9m85g81rbl55il7
http://www.billys.co.uk/english/group.php?prod=pdwi-insteps&PHPSESSID=oq0qjgl941g9m85g81rbl55il7