Evans white MS1 marching bass drum heads offer a traditional single-ply 10mil film without muffling in order to give the widest range of damping options. The MS1 series projects warm musical tones both indoors and outdoors and are durable yet priced for the budget conscious. 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. 16 drum head with a single ply of 10mil film Bright and resonant tone Traditional sound and feel May be used with any variety of internal or external muffling techniques All Evans drum heads are designed engineered and manufactured in the USA