Word of advice...
don't take these boots when you're going to be in Sand Dunes...
I worked at the Great Sand Dunes in Colorado for over a month and the sand got in the boots, like in between the mesh... Very painful on my toes, but I pushed through it. After the week long trips I would throw them in a dryer to shake the sand out and that worked, but when i'd go back it was the same situation all over again.
These boots lasted me 2 seasons. 1 with the Forest Service and the next spring/summer/fall with the Southwest Conservation Corps. I worked em hard and thats why they are no longer with me anymore.