1 1/8″ diameter felt core with multiple felt layers and medium German felt ball cover.
Warm, clear and round sound with no contact noise and a “tweener” from Dresdner 4 cork and the Dresdner 5. A few grams heavier and warmer in sound from its cork version. Good choice for Finlandia and many other excerpts because there’s just enough felt to roll nicely but not so much that you feel the need to articulate through all the felt. Minimally voiced.