Cloth.stretchingStiffness

説明

布の伸縮率。

Must be greater than zero and smaller or equal to one.
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.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        transform.GetComponent<Cloth>().stretchingStiffness = 1;
    }
}