This is a great overall swim brief, I love the design and cut for this suit. The material is extremely comfortable. It's mostly made of nylon, but with just enough spandex to allow for a little bit of stretch for guys that need either larger or smaller leg openings. The drawstring waist is perfect. I'm not sure if I like the center seam down the middle of the back of the suit, but it's not bothersome.The only complaint that I have is that it's a little bit big for my size. I should have ordered one size smaller for a better fit, especially because the rear of this particular brief is definitely too large for me. Possibly even going down two sizes would have been a better fit for me because there is enough stretch to it. Anyway, it's still a comfortable suit, and it will probably be a better fit for me in the next season or two.