Porsche 911 tops made from factory original Haartz German Classic (Sonnenland) topping material. German Classic is a premium 3-ply composite with the dobby weave inner lining in black. Include zippered window and factory style attachments. The optional one-piece style is similar to the Porsche 993 that includes a new integrated non-zip plastic window. Upper deck seams similar to the original 911 style are included. NOTE: We have two styles available. The original two-piece style and a new one-piece design.