To avoid water ring stains, don’t just spot treat. Instead, hand wash your neoprene bag by applying a mild soap directly onto the stain. Fully submerge the entire bag in cold water (yep, dunk it), then gently work the stain and soap out to make sure there’s no lingering residue.
Reshape when wet. Lay flat to dry on a clean, non-porous surface. Avoid treated or dyed surfaces.
Avoid alcohol, acetone, and oil. Don’t machine wash because the hardware might chip. Hardware should also be handled with care.