The Frou is the second style of Fitflops that I ordered.  Like the Pietra, they are more narrow than some other styles.  I purchased them in Super Navy and have worn them quite a few times already.  They are unique in appearance and very flattering on my feet.  Because of my foot and ankle problems, I find Fitflops to be more comfortable than other shoes.  I have three different styles and wear them almost exclusively in the daytime.  They wear well and will last a long time, so they are well worth the cost.  I have found that Amazon has the best prices.