
1) Black Swan footwear
Found on
https://www.crosswordclues.com/clue/ballet-shoe

A ballet shoe, or ballet slipper, is a lightweight shoe designed specifically for ballet dancing. It may be made from soft leather, canvas, or satin, and has flexible, thin soles. Traditionally, women wear pink shoes and men wear white or black shoes. Tan colored slippers—which are unobtrusive and thus give the appearance of dancing barefoot—a...
Found on
http://en.wikipedia.org/wiki/Ballet_shoe

A Very light and flexible type of heelless shoe with heavily blocked toe made with upper of cloth (sometimes of satin) designed for ballet dancing.
Found on
https://www.encyclo.co.uk/local/23292
No exact match found.