Bought two of these for the summer as I work out and swim a lot.  Decent quality but they are the low end of the Champion line.  Like another reviewer mentioned they almost sheer when held up to the light.  There is no inner liner and the material is thin.  I also don't like that the draw string is made into a loop instead of two formed ends like the ends of a shoe string.  I had to cut mine and I'm sure they will fray.

Due to the thinness of the material I'm not sure I want to swim in these?  Better deals out there for sure.  Walmart sells Starter gear for 10-12 dollars.  Much better stuff.