From Bed Stu, the Homage Ring Distressed Leather Harness Hardware Engineer Booties feature: Chrome and formaldehyde-free, vegetable-tanned leather upper Unique dip-dye color with tremolo distressed wash  Inside zipper closure Leather lining Goodyear welt leather/rubber outsole with rubber heel for traction Approx. 7" boot shaft height Approx. 8" boot shaft circumference Approx. 1.5" heel height Imported.