The cap is perfect for wearing with a mask for snorkeling, and keeping the sun off of your scalp while scalloping in Florida.

The material looks to be good quality (it feels like a swimsuit) and I love how tall the turtleneck is. The blue is brighter (less pale) than it looks in the picture, which I was very happy about. I think they run a bit small, because I'm 5'3" and 135lbs and a Small is a bit tight around my shoulders and upper arm (I have relatively broad shoulders though). It's not tight enough to restrict my mobility though, so I'll be keeping my Small.