The RED CAM Round Viewfinder Eyecushion, in genuine English chamois, is the standard RED-compatible version from Bluestar. At 2.7" in diameter, it fits the RED DSMC2 OLED EVF eyecup, RED BOMB EVF eyecup, and all similar-sized eyecups from RED and other brands. It's designed to attach to the eyecup easily and stay on securely.
This genuine English chamois version is made of 100% natural oil-tanned sheepskin leather that provides a high level of softness and perspiration absorption. It can be used in any climate. The RED CAM Round Eyecushion is also known to be compatible with the Canon VIXIA HFG40, XA30, and XA35 camera eyecups, as well as all Panavision and similar eyecups. It also fits the C100/C200/C300/C500 viewfinder that doesn't use a large rubber eyecup.