It’s sandal season guys! The Men’s Bilbao Slip-on Sandals from Birkenstock are ideal to keep your feet comfy during hot summer season. These mule leather sandals are anatomically shaped with PU footbed to ensure that your feet are comfy throughout the day. An oil- and-grease-resistant PU outsole support these sandals so you can walk freely on any surface. Just adjust the straps and buckle-up the metallic pins and you are all set for a summer stroll., Anatomically shaped PU footbed. Upper: Birko-Flor (synthetic compound)., Footbed lining: suede. Sole: PU (polyurethane) outsole that is resistant to oil and grease., Two straps with adjustable metal pin buckles. Non-Marking Sole., ,