Tortex Jazz, medium. Dunlop Tortex picks have been thoughtfully designed and produced to emulate the classic tortoise shell guitar picks, in memory and response, without the wear and chipping that tortoise shell picks acquire. Dunlop Tortrex jazz guitar picks have amazing material memory and minimum wear. Having excellent response, these guitar picks allow for the truest sound of the strings. These guitar Picks, that provide firm, strong, and flexible versatility with resounding sound and accuracy. These guitar picks will scream out those jazz licks with a more pointed tip.