All spelled out in the class rules http://santana22.org/static/clsrules.pdf

:: There are a number of different overlap sizes (125, 150
:: etc) materials and cuts for the santana 22 jibs on the
:: various sail maker sites.
::
:: What is the standard jib overlap size used for racing?

:: is there much difference in the crosscut versus the
:: laminar sails?

:: Is mylar allowed?
::
::
:: Thanks