Evans™ Resonant Black series features a single ply of 7.5mil film without control rings, vents or a mic port. The series offers a wide-open tone with maximum sustain with a classic black aesthetic. For over 60 years, Evans has been an innovator in drumhead manufacturing and design. As the creator of the first synthetic drumhead and other revolutionary products such as EMAD, Hydraulics, and the UV1 series, Evans drumheads are designed with the intent of solving problems for drummers. Regarded for high quality and consistency all Evans drumheads are made in the USA and feature Level 360 Technology™., 22" resonant drum head with a single ply of 7.5mil film, Single ply of film without control rings or vents in order to maximize resonance, Provides optimal resonance at higher tunings, Ideal for jazz and bop, All Evans drum heads are designed, engineered and manufactured in the USA