[Perfectlap]

That 1Z is without question the best leather product I have used.
I keep my seats pretty darn clean most of the time. Yet when I take out the 1Z leather and a white terry towel I'm shocked about the dirt that comes up.
I guess an open cockpit car gets an extra pounding from the air.
The thing I like about 1Z is that it does the job without making it look like you just cleaned the seats, no shiny stuff.
Special mention to the Porsche brand leather conditioner. Good stuff.

p.s.
I know I've said this a million times but the FK1 425 is excellent on glass and dash.
my kit: A durable acrylic wax (Pink Wax), claybar, 1Z leather, Raggtop and FK1 425.
I've also been using Hyp'd Tire Dressing from Strauss Auto. Good stuff dark finish without the bling bling shine.