'captivated'

It looks a bit like it is sticking its tongue out which

 

pleases me in some perverse way.  

One night, in the wee hours, I watched the film '50 shades of Grey'. It was out of curiosity (and insomnia) that I found myself there and I can't say I thought much of the film. Yet a few days later I awoke with this shoe design in my head.

The cage heel (courtesy of my son) has a small bird inside. The sole has an arrow pointing forward acknowledging that, if needed, there is a way out.