Love these, and love that they come in basic black. The whole idea of fleece thongs seemed nutty to me until I got a similar pair (but in lime green) as a gift from a sister who lives in the snow belt (I'm in southern California). They're amazing. Warm but not hot. Soft but not support-less. They work in the frigid northeast and the temperate southwest. Well, I don't wear them in summer but in our so-called winter, they're perfect.