Breast implants are medical devices used to enhance the size and shape of a person's breasts. They are typically made of a silicone outer shell filled with either saline (saltwater solution) or silicone gel. Breast implants are commonly used in cosmetic surgery for breast augmentation or reconstruction after mastectomy. The procedure to insert breast implants is usually performed under anesthesia and involves making an incision in the breast area. Recovery time varies, but many individuals can return to normal activities within a few weeks. It's important to consult with a qualified surgeon to discuss risks, benefits, and options related to breast augmentation.