Evans EQ4 Calftone BD22GB4CT 22" Bass Drum Head

Evans ’56 Calftone Bass Drumheads are a new series of products geared towards drummers seeking a vintage look and sound.
These heads bring out the best of a vintage kit and evoke a classic appearance and sound from modern drums.
Calftone drumheads are a synthetic alternative to traditional calfskin.  These heads embody the calfskin look and sound but with the consistency, fit, and tuning range made standard with Level 360 Technology. 
Bass heads are made using a 12mil Mylar base blended with unique materials to produce warm, full, and rich tones. 
Bass heads are available in sizes 16-26"and in three different versions—Calftone, EQ4 Calftone, and EMAD Calftone. 
As an EQ4, a fixed internal overtone control ring helps focus the tonal response of the drum. Can be be used as both a batter and resonant head.