Vic Firth Virtuoso Series Keyboard -- Medium Soft 1 inch yellow rubber, soft, mallet for marimba, rattan handle Soft Designed with the solo marimba performer in mind, the Virtuoso Series features a rubber core wrapped with a wool blend yarn for an enhanced warm and full-bodied sound The handles are made of birch with a unique "slip-resistant" finish for excellent feel and enhanced control A fine choice in ensemble settings, as well