Overs is over the muscle and partials is just the top of the implant that goes under the muscle which is usually called unders aswell.
Me personally have chosen unders as i dont have enough breast tissue so the implant would be noticible if i wore a low cut top but downside its more painfull and takes a little longer for the implants to drop and fluff but a little less chance of getting capsular contraction.
Overs is over the muscle so not as painfull and quicker for dropping and fluffing. But a little bit of a higher chance of capsular contraction.
If u add me u can see my before pic and can see y i have chose unders. Im having 375 high profiles on july 24th. X