These Muck boots are great.  I wear the womens Muckster II and bought these for my husband.  They fit perfectly and we both love 'em.  They're warm in the winter and cool in the summer.  Perfect for slogging through the mud and muck in horse stalls and corals, clearing the drainage gutters along our drive way and a thousand other chores on our little ranch.  Hose 'em off and they're good to go.  Last week we wore 'em to visit the Wild Animal Sanctuary and laughed at city folks trying to keep the mud out of their shinny new sneakers.  Love my muck boots!!