This Remo Powerstroke 3 Simulated Calfskin Fiberskyn 3 FA Batter gives you the look, sound and feel of a natural drumhead without the temperature and humidity vatiations associated with real skin. Poly-spun, 7.5 mil single ply combination of Remo film and synthetic fiber that gives you vintage sound -- the kind of round warm tone sought for rock, R&B and traditional jazz. Also great for concert snares, bass drums and tms. Great sound on ethnic and world percussion instruments.