Customizable Straps: Adjustable hook-and-loop for secure fit Grip-Focused Outsole: Smart traction for enhanced stability Material Breakdown: Polyurethane insole, footbed, and sole; Birko-Flor upper Comfort & Support: Signature cork footbed offers contoured comfort and arch support Crafted for active men, the Birkenstock Men's Tatacoa Birko-Flor Sandals excel off-road. Made from skin-friendly, durable synthetic Birko-Flor, they offer unmatched comfort. The robust Pu/Tpu outsole enhances traction on varied terrains.