What attracted me was the price, it was on offer at half price. It's a fairly thick material, so I'm sure it's thermal properties are good. However, I found the size of the arms a problem in the large size, they're very tight on me. I'm a slim fit 15.5" collar for shirts. Also, it's banded vertically and seems to be more elastic in the grooves so when you stretch the material stretches with you. I'm sure it's the sort of thing that superheroes find great, but it's not for me.