They are made of a durable silicone that lies against the chest wall comfortably and are worn every day. They require a specialised fitting as they come in a range or sizes and shapes to suit you. A breast form is also appropriately weighted to balance out the other breast this is why a professional fitting is mandatory. Breast Forms have been made to suit any lifestyle, swim forms have been designed so that you don’t have to give up your exercising or hobbies. The difference between a breast form and a swim form is that a swimform is more resilient to the chlorine. ‘The best way to explain it is that if you were to dive into a pool, a swim form will withstand that pressure whereas a breast form won’t and therefore may split.’ - says Michele, one of our specialist mastectomy fitters.