By wear out, I mean get to a point where it doesn't have the cushion it used to? I have two pairs of PI Canyon MTB shorts that I bought last summer and have used them both quite a bit since they're my only cycling shorts. The shorts still look like they're in good shape, but the chamois seems to have lost some of the cushion. Is this normal after extended use? Any tips to make the chamois last longer if this is indeed a problem.