I made my own quilted fabric (that pattern called for using pre-quilted) and if you make the large size (like this) it take a HUGE LONG separating zipper. Can work great for taking in luggage flat, then zip together for you tote.
love love love the Disney fabric and ribbon straps. so cute, I believe I've seen a pattern as this for a flat bag that zippers up that is very handy for travel. great job.