Go ahead and give a little happy howl at these Hollis Moon boots. They may be high, but the subtle side zipper makes it more low maintenance. Go ahead and give a little happy howl at these Hollis Moon boots. They may be high, but the subtle side zipper makes it more low maintenance. From Clarks Footwear. Style: Hollis Moon Side zipper Ortholite footbed Approximate measurements: Block heel 2-3/8"H; Shaft 14-3/4"; Circumference 14-1/2" Measurements were taken using a Medium size 9; measurements may vary depending on size Fit: true to size Leather upper; man-made balance Imported