British figure skater Cecilia Colledge was "responsible for the invention"[1] of the spin and the first to execute it.
[1] The upright spin has long been associated with women's skating, but men have also performed it.
Skaters include it in their programs because it increases their technical content and fulfills choreographic needs.
[3] The layback spin is executed by holding the free leg in a back attitude position and arching the head and upper body backward so that the skater faces up towards the sky, ceiling, or further.
It is executed by the skater grabbing their free blade and pulling the heel of their boot behind and above the level of the head so that their legs are in an approximate full split, with the head and back arched upward.