Evans 20" EMAD Calftone Bass DrumheadEvans Calftone drumheads are a synthetic alternative to traditional calfskin. They embody the look and sound of a natural skin but with the consistency, fit, and tuning range made standard with Level 360 Technology. These heads bring out the best of a vintage kit and evoke a classic appearance and sound from modern drums. Calftone is made using a 12mil Mylar base blended with unique materials to produce warm, full, and rich tones. Combined with EMAD