The Heavyweight snare batter head is the thickest, most durable film-based drumhead in the Evans product line. Designed with the "heavy hitter"in mind, the Heavyweight is 23mil thick at the center of the head. While thicker heads often "choke out"due to extreme mass, the Heavyweight reverse dot patch flexes and allows for a wider dynamic range.  Heavweight durability doesn't have to mean a heavily weighted feel!