B.A. Beck wrote a review of Chaco Arbora Tall Waterproof Boot - Women's on December 20, 2013
Familiarity: I gave it as a gift, but have feedback to share
The ones I got for my wife do have a zipper, so there must be a different variant. She loves them - the shearling is incredibly warm, and the soles have plenty of traction on ice - an important feature in a winter boot!