With the CHERRY STREAM PROTECT MEMBRANE, millions of CHERRY STREAM KEYBOARD users can now add a customized hygienic key protection membrane to their keyboard. Together, CHERRY STREAM keyboards and the CHERRY STREAM PROTECT MEMBRANE become CHERRY STREAM PROTECT keyboards. The keypad can be completely wiped cleaned and even disinfected, but is still very comfortable to type on. The key membrane can be taken off the keyboard for washing and changing. The STREAM PROTECT MEMBRANE thus effectively protects people, the keyboard and the environment. The STREAM PROTECT MEMBRANE provides hygienic protection wherever a CHERRY STREAM keyboard is already in use, for example in public administration, educational institutions, schools and universities or in shared office environments.