Birkenstock Women's Oswego Casual Sneakers in Sandcastle Size 7-7.5/EU 38. Excellent condition, like new, maybe tried on - light dirt on sole. Fun, comfy shoe for summer! Meet the BIRKENSTOCK Oswego. The perfect casual slip-on shoe. With a flexible rubber sole and extra padding, stay comfortable all day long. Take these sporty shoes anywhere and everywhere. The upper is made from smooth canvas and soft suede. Removable, anatomically shaped cork-latex footbed Upper: canvas, suede Footbed lining: suede Sole: natural rubber Made in Portugal