The first contact is inconvenient see painful despite a lubricant. I think it takes a while before putting it correctly. For me the big REALLY BIG! So I opted for breakfast and for the moment I leave an average of 6 hours and I still alternates with other protections. I prefer to do this time of "running-in" to accustom my body and my mind !! our memories do not know this kind of concept. However, I am glad to know FINALLY an alternative to tampons that are real pollutant not only for our planet but also for our body.