Durable Perwanger leather and 100% recycled fabric (GRS-certified). PFC-free waterproof membrane. Three-dimensional polyurethane structure for all-around comfort and support. Raised sole edge with stabilizing PU for enhanced support. HANWAG 3D-BreathFit with thermoformed PU foam for asymmetrical padding and a customized fit. Non-slip "Terragrip" with 4 mm deep tread for versatile terrains. Lightweight.