The 10 mil, single ply, Focus-X™ drumheads feature a unique “vented” muffling ring tucked into the hoop underneath the head. The Focus-X vented muffling design eliminates unwanted ring while maintaining a fat tone on tom toms and a sensitive,articulate sound on snares. No external muffling needed! Great for close up miking- live or in the studio . Also available in a coated, reverse Power Dot version for even more FOCUS!