The OEM liner bags fit quite well with my Saddlebag Liner/Stiffener kit. The bags I borowed for the ocassion from my friendly dealer (to make the molds for the liners themselves, had the bags inside). They are quite well made and since I no longer have either (I had to return the bags/inner bags), if I remember correctly were made by Commercial Sewing, Inc. My Panniers look a helluva lot better with the liners installed. I've greatly exceed the wimpy weight rating a number of times and they don't deform whatsoever.