The Delrin Freedom Finger Picks are made of Delrin, an extremely strong material that provides a very soft and natural sound on the strings. Simply slip it over your own fingers to give yourself a consistent affect when fingerpicking. Best of all, you can size them to your fingers by putting them in hot water for about 20 seconds to get an even better form. They can even be filed! If you happen to lose a nail, these picks will be your saving grace. Choose from Large, Medium, and Small and 24pcs. or 3pcs. in the drop down menu.