Description of Merrell Reactor Sport Sandal - Women's True sport sandal versatility. Features: Synthetic Leather Upper Neoprene/Spandex Lining Hook and Loop Instep and Forefoot Closure Microban® Antimicrobial Footbed DeepDish™ 3D Contour Design Compression Molded EVA Footframe Q-Form™ Alignment System (women) Air Cushion® Midsole Injection Molded Grade 2 Nylon Forefoot Flex Plate 4.5mm Sole Lug Depth Vibram® Multi-Sport Sandal Plus™ Sole/Trek & TC1 Dura Rubber