Probably everyone is familiar with the instructive myth about Icarus' flight.
This is a tragic theme of failure at the hands of hubris when you want "to fly too close to the sun" ignoring all instructions. And, as a result, you fall down with burned wings.
There are a lot of interpretations of the myth in an art (literature, paintings, movies etc.), but one of the most significant is a ballet in 3 acts directed by Vladimir Vasiliev in 1971 for the Bolshoi Ballet in Moscow.
That is why this poster in an artistic way depicts the wings as a falling fireball with legs. The legs on the poster are drawn not only as a symbol of the fact that these flaming fireball wings symbolise a particular person – Icarus – but also because the main inspiration was a ballet performance.