Some people can sometimes experience this when pumping too hard or by attempting to use a high force gaiter than is suitable.
Just like any other bruise you get on your body, any bruising will fade as your body heals – everyone heals at a different rate.
You may continue using the Penomet but we would recommend shortening your usage time to 5-10 minutes, using a lower value gaiter and if/when discomfort does occur, discontinuing your session.
In addition if you are using your Penomet as an air pump, we’d recommend using the Penomet in the bath or shower as this will provide additional support and comfort.
One main cause of bruising is as a result of using the release valve too quickly at the end of a session resulting in a sudden change in pressure. For best results gradually release pressure over the course of 5-10 minutes.