The Naturalizer, the 27 Edit Nikita Knee High Leather Boot features:  Premium Leather upper responsibly sourced from Leather Working Group certified tanneries 100% recycled lining and 35% bio-based sock lining Pointed Toe Side zip closure and hidden goring panel for extra flexibility REZORB™ responsive cushioning for shock absorption + impact protection for sneaker level comfort Signature Contour + Comfort technology for a premium fit Smooth lining and insole for natural comfort and breathability Extra cushioning for added layer of unrivaled comfort Proprietary rubber outsole and slip resistance Partially bio-based footbeds: Crafted with soft lightweight cushioning, built in arch support, and a molded heel cup Approx. 1 3/8 inch heel Approx. 14.76 inch boot height: 14.57 inch calf circumference Note: Measurements based on size 6 boot.  For each half size larger, shaft height increases by .12 inches, circumference by .20 inches Consciously packaged: 100% of our shoe boxes are made of 80% recycled paper + soy-based ink Insole, outsole, toe box and heel counter crafted from partially recycled materials Imported.