Evans '56 Calftone Drum Heads look, sound, and feel like natural calfskin, but they've got the modern benefits of manufacturing consistency, fit, and tuning range thanks to the 360 Technology design. And they won't become floppy under humid conditions. This 12 inch tom head is made from a single ply of 7-mil Mylar blended with secret ingredients to produce the rich, vintage tone of calfskin. The attack is subtle and understated, followed by a very full tone with fairly short sustain.