Patients have 2 choices when it comes to the shape of the implant. They are either round implants or anatomic tear drop oval dimensional. The anatomic tear drop oval dimensional implants have a polarity in other words there is an up and there is a down. So if you’re looking at like my pen the pen has to be like this. Sometimes the implant does shift in position when that happens it can be noticeable. In general I like to use round implants for most patients because the reason of polarity and so if the implant does spin in the pocket a little bit there won’t be any difference and that is the main difference between those 2 implants.