Evans Tri-Center Conga series simulates the bright, full sound and feel of animal skin while eliminating the problems associated with natural skin heads. The Tri-Center minimizes overtones and adds weight to the center to enhance the fundamental tone. 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.