Breast implants are typically made of a silicone shell filled with either saline solution or silicone gel. Silicone implants are made of a silicone outer shell filled with a cohesive silicone gel, which closely mimics the feel of natural breast tissue. Saline implants, on the other hand, are filled with sterile saltwater solution. There are also newer types of implants, such as structured saline and gummy bear implants, that use different types of fillers or shells. The choice of implant material and type depends on a patient’s individual needs, preferences, and medical history, and should be discussed with a qualified plastic surgeon.