Ittan-momen is an NPC that resembles a towel. He can be found in The Infinite Wilderness. The Towel Effect can be obtained by interacting with him.
Name Origin
The name Ittan-Momen comes from the youkai with the same name. An Ittan-momen is a tsukumogami (an object which became 100 years old and came to life) and looks like a "long, narrow sheet of cloth normally used to make clothes". They fly around at night and attack people by wrapping themselves around the head of the victim and strangle or smother him to death.