I wore this on my 2 hour bike ride last weekend.  I started wearing a helmet for safety sake and couldn't fit/didn't want to wear my normal cloth visor under my helmet, so I bought this based on the reviews.  It fit my head nicely and securely--didn't move at all during the 2 hour ride.  It did keep any and all sweat out of my eyes and off my face, so I was very pleased.  Granted it is September in Florida and the weather was mild--think in the high 70's.  During the summer may be another story so I may do an update.  My cloth visor was a cheapo from WMart that would get completely soaked from back strap to front bill (but still do the job) in the June-August months of 100% humidity.  If this headband keeps up like the visor did in the summer I will probably buy another one when it wears out.  I did wash it in my washing machine in cold water on gentle (like the directions said to) with the rest of my clothes.  Unlike the direction advised, however, I put it in the dryer with the rest of my clothes on light heat---so the elastic that holds it to my face will probably give out; but it was fine this first time around.  It also left an indent on my forehead after I took it off---it didn't bother me, I'm just letting you know incase anyone is curious.  It went away just like a pillow indent does on your after waking up.