The material seems very high quality as does the chamois. My disappointment is the end of the legs which are very loose. I've bought Pearl Izumi shorts (Large) for years and haven't had a problem. The fit has always been right on, but not these.
I have been using Pearl Izumi shorts for years, and always size medium, and I have not gained or lost any weight.
These shorts fit like a size large-really a little too large, but I washed and wore them, so now I suppose I am stuck with them.
From now on, I guess I'll have to guy my shorts at a shop and try them on first.
I've been using the same bike shorts for about six years, and thought that bike shorts were uncomfortable by their nature. This pair of shorts is so much better than what I was used to! I'm very happy with my purchase.