Evans Genera HD Dry Drum Head, 13 Inch 13" white snare drum head made using two plies of film. An outer ply of 5mil and an inner ply of 7.5mil film 2mil overtone control ring on the underside that "floats" with the head, eliminating excessive overtones and controlling sustain One of Evans most popular heads, this single-ply reacts with the fat spread of a double-ply The Dry version features small vent holes around the edge that eliminate stray harmonics and tighten the sound All Evans drum heads are designed, engineered and manufactured in the USA