Tecnica Men's Wyoming Zip High Winter Boot 100% Leather Rubber sole Shaft measures approximately 11" from arch Heel measures approximately 1.25" Boot opening measures approximately 14" around Warm, lightweight Primaloft insulation Triple density PCS footbed delivers superior warmth and cushioning TeciGrip winter compound on outsole keeps you safe and sure footed Low-profile Lateral Catamaran cradle integrated with outsole provides stability