Rubber sole for durability and slip-resistance Fully waterproof and insulated 4.5mm neoprene booties for flexibility, shock absorption, and heat retention Breathable H-Airmesh lining for dry and comfortable feet Reinforced rubber layers for additional protection Aggressive anti-slip rubber outsole for increased traction Comfort massage memory foam insole for extra arch support Suitable for all-day-long use on your feet. 100-Year With Your Lifetime Warranty(Learn More)