Rubber sole. Shaft measures approximately Calf High from arch. Boot opening measures approximately 4″ around. Rich, full-grain ‘pull up’ leather uppers in handsewn construction. 10-Eye lace-up boot with medial side zipper for easy on/off versatility, choice of 2 waxed cotton laces. Fully-lined with supple lambskin. Premium Vibram lugged rubber outsole.