: Adding interior compartments or exterior "window" pockets.

: The bag typically features the distinct "V" shape on the front (the bus's nose), circular "wheels" on the side panels, and often utilizes patchwork or laminated cotton to replicate the two-tone color schemes of original VW vans.

: Heavy-duty cotton canvas, denim, or even waterproof neoprene.

: Sewing the webbing handles around the bottom of the bag for maximum weight support.

The contents of a .zip pattern file generally include a PDF instruction manual and printable pattern pieces. The construction process follows these major steps:

: Cutting the main body panels, side circles (wheels), and the "V" nose panel.

A "Bulli" duffel bag is designed to capture the unique, boxy-yet-rounded shape of the Volkswagen bus. These projects are popular in the DIY sewing community, often found on platforms like YouTube or specialized hobbyist sites.