I bought these for spring, but on a whim, wore them this winter day.  They are very comfortable.  The blue is bright enough to serve as a pop of color with a dark outfit.  I received a number of compliments.  The shoe material is sturdy enough to maintain its color.  The strap has a ribbon appearance and feel.  Time will tell how it wears.  It may surprise me.  Otherwise, no reservations, and I really appreciate a little fun on a winter day.