I have heard of bike riding causing an issue.... I have a Rigicon implant which is a mallabble implant not an IPP which is the one that involves having a reservoir with fluid and a pump installed into your testicles. Mine is just 2 rods that are hard all the time, it can bend 135 degrees downwards and you can bend it up when you want to use it. I'm 70 have the old man belly and a lower fat pad so no issues hiding it .. unless you are real thin and really well endowed you would be able to hide it well. Go to a site called Franktalk and join all the info you can ever want is on there about implants pros and cons and most of the guys on there have had implants done.