Music Nomad MN200 Edgeless Pure Flannel Polish Cloth
Flannel has been the standard polish cloth for ages, but has of late suffered from claims that it is too abrasive. The rise of Microfiber cloths has made what was comparatively soft before look not as attractive now, and with the affordability of these, we'd certainly recommend micro fiber for your polishing needs.
On the other hand, in our shop, we use a flannel cloth for our neck oils and the like, so that they don't get on the body or areas they shouldn't by being on your microfiber. Take your care routine up a notch, your instrument deserves it.