The Pectoralis Implants are available in three styles which has multiple sizes each. First style is the most popular. It is available in non-sterile and sterile implants. They can be bought packaged or individually packed. They are mirror-image, which means that each of them are made for a particular side and directional. They are inserted through an incision to the transaxilla or the armpit, just below the pectoralis major muscle and atop the pectoralis minor.