Sandspur On a long trail through the dunes, tighten up our adjustable outdoor sandal—neoprene-lined for extra comfort. • Coated leather upper • Hook and loop closure system for quick adjustability • Microfiber lining • 100% recycled microfiber wrapped insole • NXT lined insole to prevent odor • Molded nylon arch shank • Merrell Air Cushion+ offers full foot cushioning • Lightweight EVA foam midsole for stability and comfort • TPR outsole