From Birkenstock, the Women's Catalina Luxe Buckle Birko-Flor Slide Sandals feature: Shimmery, embossed Birko-Flor® synthetic upper Birko-Flor upper: Made of easy-to-care-for and hygienic PVC, which has been lined on the inside with a soft, breathable layer of fleece. This high-quality material is very gentle on the skin, and it's comfortable while also being very durable. Slip on design Fully adjustable luxe buckle for a custom fit Classic contoured cork footbed supports the arches of the foot Deep heel cup for all day comfort EVA outsole Flat heel Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock narrow footbed that will fit most medium feet. Imported.