My wife bought these and wore them in a jacuzzi once and swimming in a lake 7 times. Each time they were rinsed in cold water and hung to dry in the shade.  After 2 months, the fabric began to lose elasticity and the ankles gaped with scattered areas of unflattering puckering of the fabric.  Waistband elastic remained in shape. Got a few scrapes in the fabric from tree branches in the yard. Didn't take much to snag them superficially.  Wife prefered a very similar item she bought at a garage sale for $1, made by Northface. The Northface item is probably for winterwear but is actually made of the same type of nylon fabric and also keeps the sun off.  The Northface weave is tighter and probably disperses less heat in the sun, but no appreciable difference.  The northface item was probably a decade old when she bought it and went through about the same usage as the coolibar tights and the fabric remained like new.

In retrospect, I would not buy this item for the price. Preferred the $1 garage sale item.