The feel of the mechanical keyboard is lost
Arrived in a large cardboard box for only a small bag. An envelope would have been enough.
Installed on a Logitech G513 with GX brown switch, attenuates the noise and the end of stroke feeling that is typical of mechanical keyboards, so it feels like typing on a membrane keyboard. However the noise I am trying to mitigate is the noise when the key is released, so this product is not for me.
Still, it's a good product but it's rather expensive for 125 bits of plastic.