About the Dunlop Delrin Standard 2.0mm Guitar Pick, 12 PACK:
 
Delrin 500 Picks have a super smooth surface with a specially designed beveled edge that glides across strings with little resistance. With a warm organic sound that produces little clack, using one of these picks is almost like plucking the strings with your fingers. Rigid but not inflexible, Delrin 500 Picks will give as much as you need and then snap right back into place.