Evans Strata Timpani HeadsThe Strata are the same color as natural skins. They have undergone a treatment that will protect your mallets while improving the performance of the skins. Their warm and precise tones will easily blend into any ensemble. 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