I've had this hat for about a year now and it works very well in keeping the sweat out of my eyes during spin class.  This hat helps my eyeglasses stay put (without this hat my glasses slide right off of my face).  The sweat is channeled from your forehead to a point just in front of both ears, where it can drip down the sides of your face, in front of your ears.  I almost wish the gasket were a little longer to channel the sweat *behind* the ears instead. The hat is very breathable and the grey color doesn't show sweat.  The hat washes extremely well--I put it in a lingerie bag and throw it in the washer, then air dry.  I've washed the hat once a week for at least a year and it looks good as new.  I took one star off because the sweat band is separate from the front of the cap, making it kind of awkward to get on.  If you're not careful the sweat band can ride lower than the cap bill which looks really stupid once you get to a mirror and realize your mistake.  I also wish the cap were slightly lower volume.  I have an average size head for a female and have to pull the cap low (almost to the point where my ears join my head) so there's no excess fabric on top.  But these minor issues aren't deal breakers and I'm back to buy another color.  This is by far the most useful hat I've found for keeping sweat out of your eyes during intense physical activities.