ImportedSynthetic soleShaft measures approximately mid-calf from archHeel measures approximately 1 inchesBoot opening measures approximately 10 aroundSNOWPLOW ÿ A water-resistant leather that??s ideal for wearing in snow. It repels salt and grit, is easy to clean and won??t stain from water exposure.DR. MARTENS DURABILITY ÿ Engineered with a tough and hardwearing Goodyear-welt and air-cushioning.DM’s WINTERGRIP SOLE – A new high-performance PVC/rubber hybrid sole, with EVA grooved cleats providing superior traction, grip and durability on slippery surfaces.