Saline implants are a type of breast implant filled with sterile saltwater. They are commonly used in breast augmentation and reconstruction procedures. The outer shell is made of silicone, and the implants can be filled to varying sizes during surgery, allowing for a customizable fit. One advantage of saline implants is that if they rupture, the saline solution is safely absorbed by the body. However, they may feel less natural compared to silicone implants, which are filled with a gel-like substance. Both types of implants require careful consideration and consultation with a qualified plastic surgeon.