Some rubber and plastic fetishists have an affinity for diapers and rubber pants. In the case of disposable diapers, this attraction would be to their crinkly plastic backing. In the case of cloth diapers, it would be towards the latex or pvc of the pants worn over them.
Adult Babies and Diaper Girls
Preferences in diaper fetishism - Like many fetishes, personal preference plays a large role in which communities the fetishist will identify with. In diaper fetishism, one of the primary divisions of preference is whether or not the diapers are used for their intended purpose, and if so, to what degree. Many diaper lovers gain arousal from "wetting" or urinating in their diapers. A smaller number gain the same arousal from using the diaper to "mess" or defecate. Some fetishists do not use their diapers at all.