Oregon Mudders Men's MCSB200 Golf Sandal Breathable cushion pigskin leather insole Performance innersole features dual-density strike zones for high impact activity Molded neoprene mid-sole is made of synthetic rubber material lightweight and flexible, yet still durable and resists breakdown by water TPR rubber outsole with replaceable inserts that are reinforced with fabric strands to add strength and flexibility Surlyn molded arch plate provides the best possible arch support without adding weight