Sierra Auto Tops Porsche 1997-2002 Boxster Convertible Top, TwillFast II Canvas, Black First quality Twillfast II cloth with a dobby weave lining Precision cut with Gerber automated computer guided cutting equipment DOT approved plastic window same as factory original Includes new steel side hold down cables already securely installed on this top Factory-style retainer attachments are sewn-in for an easy & accurate installation