G'Day Gentlemen

Anybody seen an retractable strop..
I've seen this on in a movie "4 for Texas" with Dean Martin and Frank Sinatra.

This is the scene
as Franki is about to get a shave form a beautiful lady, she strops first the razor on that retractable strope
mounted on the barberstool..

Question is, is it possible and if yes what kind of leather has to be used good enough for a good strop>?