I forgot to mention that I wore it over my clothes and sometimes I would wear it to bed and it would be directly on my skin.  My kids don't have any hearing problems.  Hope this is helpful.

I heard about BabyPlus when I was a practicing pediatric physical therapist.  I was very interested in it because I was visually observing such amazing developemental.  I remember a set of twins that were born premature.  I couldn't believe how well the twins were developing.  The mom explained to me that she wore BabyPlus when she was pregnant, so I became very interested.  I read all about the system and decided I was going to use it.  My husband would tease me and call it the "bum bum".  He doesn't tease me anymore, he's a believer.  I felt that it was just as important to use as prenatal vitamins after my first child was born.  I used BabyPlus with all three of my children ages 5, 3, and 2.  I would totally use it again.  I credit BabyPlus for all of my children's good sleeping habits.  They are and always have been great sleepers, which is so important to a new mom.  They were happy babies and transitioned very well.  I really feel that BabyPlus is an early developmental tool that you can use to help your baby a good start....Best wishes on a healthy pregancy.