The 15" Frost Drumhead have two layers of 177 microns with a lot of attack and sustain duration and easy to tune. The printed inner black ring offers a balanced and pleasant harmonic sound ideal for bands and groups with public acts on the street. The design of the aluminum ring together with the 360º plastic drawing make them fit perfectly to any helmet recess and a quick coupling with the ring is achieved. All the best bands and marching bands with NPdrums® instruments use this patch for their percussion instruments. Manufactured with the guarantee and experience of the evans drumheads brand .