Love, love, love.  This is my first pair of Chaco boots.  I love that I can flip the tops up for a taller look.  I can wear these to work (as a teacher) for 8 hrs a day on concrete floor and my feet and back still feel great.  The color is also a plus. I can wear them with black or brown and jeans.  They are super warm too.  No need for wool socks with these babies.