With a microfiber towel, you can always dry both moisture and dirt from your discs so that you have the best possible grip on the disc before you throw. These towels are also quick-drying, so you don't have to worry about towels being wet for a long time after your round.
With this towel from Prodigy, you get a good quality microfiber towel that has a small strap in the corner so you can easily attach it to your bag or belt when you play.