This is a genuine leather protector compatible with the Typ 240, 246, and 262. It is installed by removing the camera body's bottom plate and attaching it with a dedicated bolt to the tripod socket. There is a magnetic, openable window on the bottom, allowing access to the battery and SD card without removing the protector. From the Leica website: Made of high-quality soft leather Designed for smooth operation during shooting Ergonomic grip Compatible with Leica M and Leica M-P (Typ 240), Leica M Monochrom (Typ 246), and Leica M (Typ 262)