The Koryo has been one of kybun's most popular slip-ons for some years. Whether worn at home, at work or at leisure, this backless ladies' shoe suits every occasion. The heel strap can be adjusted to any length or removed entirely. The instep height can now also be adjusted individually to fit any foot using a Velcro fastener, making the Koryo 20 Black even more comfortable to wear. This successor model of Koryo Black is released on the Strato sole.