SOLATEX Advantages - Shrinks drum tight, adds tremendous strength , is tolerant of a wide application temperature range, never wrinkles or sags in the sun.

SOLARTEX Disadvantages - needs a coat of clear in order to stay looking good long term.

21st Cent Fabric Advantages - doesn't require clear-coating

21st Cent Fabric Disadvantages - Suffers discoloring if recommended application temp is exceeded. Cannot be shrunk drum tight and, therefore, adds little strength to the underlying structure, sags in the sun.

To give you an idea of how good Solartex is; I have a 4 year old Four-Star 60 that serves both as a trainer when I instruct at the club and as my winter season "bush" plane for flying off snow on skis. The plane's covering is thus exposed to temps ranging from 95F to 20F and after all this time I've never had to reshrink the covering.