The Amoena Tresia™ Personally® 643 Breast Form has a front layer of moldable softness and a back layer of firmness and support make up this popular breast form. The soft front layer will mold to the bra, creating the most natural drape, while the back will stay firm against the chest, giving you security and support. The Amoena 643 Tresia Personally Breast Form is triangle shape with a shallow fit is anatomically weighted to provide the best body balance.