The T-top cars came with original T-top bags that were manufactured by various companies. They were made to protect the finish of the T-tops while they were removed from the T-top center bar. There were two different kinds of T-top bags issued throughout the 1968-1982 Corvettes.
The first design use the hook & loop fastener design, also known as the Velcro design (see Fig. 1). We’ve seen two different styles of the opening. One is with the opening on top, where you slide the T-top down vertically. Another style is an opening from the side, where half the T-top would slide horizontally into a pocket, and the other side of the bag would flap over. These T-top bags were used from 1968 up to Early 1969.
The second design uses a snap-button design. Three “tops” were spread across the flap that would close on a set of three lower receivers, securing the T-top inside the storage bag. Since the bags were made of very thin vinyl, these snaps usually tore through the material when the snaps were pulled off the receivers. This style of storage bag also allowed the removable roof panel to slide in from the side. This style was used from Late 1969 all the way to the end of production of the C3 Corvettes in 1982.