It’s about the shape of the implant. High profile means your boobs will be more ‘pert’ and ‘sticky outie’. Low profile gives a more natural look, having more volume at the bottom of the boob, than the top.
I was told women tend to go for the high profile, whereas I have chosen low profile for a more natural look.
Hope this helps… I’m sure Dr Singh will give a much better explanation and let you try the two implants for high/low profile.