The good folks over at WeightWeenie insist I put one of these on the Arabesque:
https://www.merlincycles.com/san-marco-regale-evo-carbon-road-saddle-2017-101295.html
Which would match, however my back side is not big enough, so have ordered a Brooks Cambium C13 instead:
https://www.wiggle.co.uk/brooks-england-cambium-c13-saddle/?lang=en&curr=GBP&dest=1&sku=5360734325&kpid=5360734325&utm_source=google&utm_term=&utm_campaign=Shopping+-+All+Products&utm_medium=base&utm_content=mckv|ss0HRYFi5_dm|mcrid|295292317327|mkw||mmt||mrd|5360734325uk|mslid||&mkwid=ss0HRYFi5_dm&pcrid=295292317327&prd=5360734325uk&pgrid=58852352866&ptaid=pla-586295263117&gclid=CjwKCAiAgrfhBRA3EiwAnfF4tvFoK0UcGMoDRqveyxFmmL5D7LuhGB8pF5BPA583S0Uwz66Ndz2yKhoCPQYQAvD_BwE
Hopefully it’ll work for me!