Just received the Crocs black/charcoal woolly mammoth.  These Crocs are awesome!  Just what I need for light snow and slush (I live out and we don't have sidewalks).  I wear a size 9W in all other Crocs, but I needed a size 10W in these.  The woolly mammoth is much more cushy than the mammoth and they sit higher than most of my other Crocs.  These are stiffer than the Reliefs, Bayas, Clouds or Troikas but they do have double the thickness.  I think these will become softer over time (as the others tend to).