With the Purekeys Compact FA Medical Keyboard you can enjoy a comfortable typing experience and the optimal hygiene of a completely flat keyboard. ^^ Pressing the dedicated "clean key allows keys to be disabled during cleaning. ^^ This keyboard has a completely flat silicone top layer so that bacteria, viruses and other germs cannot accumulate between the keys. ^^ Each key features a durable "scissor mechanism" that ensures a longer product lifespan and comfortable typing.