DESIGN: Square toe Rolled shank area 1 1/2" Rocker heel Fiberglass shank The Durango(R) X-Pand System(TM) is a hidden gore expansion for a universal fit and easy on/off Full-grain leather with ventilated shaft to promote maximum air flow IN-SHOE COMFORT: The Durango(R) X-treme Comfort Footbed(TM) with memory foam has three times the flexibility, cushioning, and support. This lightweight and durable silhouette provides extreme comfort by forming to the shape of your foot for immediate gratification Dual-Density Midsole with firmer shock absorbing heel for added stability and a soft shock absorbing forepart for ultimate flexibility and comfort An air mesh material with perforation to promote maximum air circulation to keep your feet cool all day long DURABILITY & TRACTION: Anti-torsion rigid external shank provides added lateral stability Multi-Durometer Rubber Outsole with high abrasion rubber outer lugs for high-impact durability and softer durometer mid lugs for added flexibility and increased slip, oil and heat resistance High abrasion heel counter