While I have not had these for a very long period of time, I have been using them heavily. The fabric, as would be expected, is slightly stiff. However, I have very sensitive skin and have encountered no negative effects from the material. When I am wearing them, I do not notice any stiffness. The material is extremely tough and durable. I can't see them wearing out. These are just a wonderful all-around short. My only complaint is the snap mechanism. A button would be much more suitable. I would highly recommend these to anyone. Every purchase also helps to support our country. Well worth the cost.