Zappos.com is proud to offer the The North Face - Havasu (Dark Gull Grey/Alloy Grey) - Footwear: The Havasu is a soft, leather highly comfortable sandal with a durable construction fit for active wear. Water-resistant, synthetic nubuck upper and polyester webbing with forefoot and instep adjustability. SBR lining package ensures all day comfort. Dual hook-and-loop closure system. Cushioned heel pad. Removable heel strap easily converts to a slide. Molded EVA midsole with X-2 cushioning under heel. Exclusive HydroTrak sticky rubber outsole. AgION : Antimicrobial silver agent woven into the top sheet of the footbed controls odors.