I like this boot.  Just got it in the off season in preparation for winter and due to our late winter rains.  Not sure yet if they really keep your feet warm.  But other reviews say yes.  I do like that they are a hard shell on the top as I plan to wear them at the barn (horse) and so a firm upper is best in case one gets stepped on!  LOL!  I will say though that I had to return and buy a size biger.  Normally I'd be an 8 but it was too tight on the top of my foot and I could barely get it off.  The 9 actually fits great barefoot and with socks perfect. Go a size bigger than normal!