|Mind the gap!|
My antiqued black Lindsay Plates came, and they were pretty sharp. Their long, straight style made me pleasantly leggy, and the shaft height was perfect. However, that promised 13-inch opening was closer to 15 inches in my shoe size (8), creating too much of a gap.
Taylor Pull-On, and it's a midcalf style, not knee high.
Update: Later, I discovered terrific newer styles: Phillip Tall Harness, the Melissa Tall Riding & the new Molly Gore Tall-- all knee high, and all slim by Frye standards! There is hope after all :)
Rating for the Lindsay Plate...
Calf slimness: **/5
In numerous great color choices.
Find it at: Amazon
(over half off in some size/color combos as of early March 2015!)