Dv Dolce Vita Women's Nitro Over The Knee Lug Boots Black Size 9 MChunky lug soles ground a stunning silhouette in DV Dolce Vita's Nitro over the knee boots. 2 1 2 block heel Shaft height; 20 1 2; Circumference; 15 1 2; measured on a size 6 Round toe over the knee boots with inner ankle zipper closure Cushioned insole memory foam and flexible sole for added comfort NOTE; Shaft height and circumference vary by size.