Numentum Technology�a �neutral positioning� system that keeps you stable on the most rugged terrain and encourages your foot�s natural biomechanics. Integrated TPU shank and arch support provide torsional rigidity and mid-foot support. Shock dispersal plate in forefoot for protection from stone/tree root bruising. * Vibram nonmarking slip-resistant lugs provide grip and traction on varied surfaces. 60-durometer EVA midsole for optimal shock-absorbing cushion. 70-durometer EVA stability postings on medial and lateral sides for neutral positioning. * eVent waterproof, highly breathable membrane keeps feet dry and comfortable. Leather upper for support and protection; leather-lined collar and tongue. Padded, segmented collar for protection and flexibility. * Rubber toe protector. Mid-cut for added security and protection. Designed for traditional hiking, fast hiking, all-day walking.