A small breast sex doll is a type of sex doll that has smaller-than-average breasts. These dolls are typically designed to be highly realistic and may have silicone skin, articulated joints, and other features that make them feel like a real person. Some small breast sex dolls are also equipped with internal heating mechanisms, allowing them to feel warm to the touch. These dolls are popular among individuals who are looking for a more lifelike sexual experience and are attracted to the appearance of smaller breasts.