wallbounce wrote an answer about The North Face Chilkats Boot - Girls' on February 2, 2009
I wear a size 5 in women's shoes and bought size 3 in girls'. If you can fit a 5.5/6 in women's, then you might want to get the 4 in girls' so that you can wear thicker socks. I had to walk up several flights of ice-lined stairs to the front door of the cabin, and these boots have enough traction. I felt safer than previous years in my tennis shoes.