From Twisted X, the Women's 12" Tech X Leather Western Boots feature: Leather upper Square toe construction Pull on design with pull tabs CellStretch® Comfort Technology is an interconnected network of comfort cells that compress and rebound with every step Blend85™ footbed made with 85% recycled foam Leather outsole with rubber heel cap Approx. 12" shaft height Approx. 13.7" shaft circumference with Twisted X "Calf Stretch" technology which adds an additional 1.89" to the circumference when fully stretched Approx. 1.75" heel height Imported.