Cloth.bendingStiffness
var bendingStiffness: float;
Description

Bending stiffness of the cloth.

Must be between zero and one. Setting the value to zero disables bending stiffness simulation.
In many cases, when you want a cloth to be more stiff, actually reducing the number of vertices will get you better results - and performance.
	// Set the bending Stiffness to 1 regardless if the cloth
	// is a Skinned Cloth or Interactive.

transform.GetComponent(Cloth).bendingStiffness = 1;