This is a thong style sandal from Birkenstock with non-leather Birko Flor® uppers, designed for casual or formal attire. Birko Flor® is a material developed by Birkenstock as an alternative to leather - made of soft acrylic and polyamide felt fibres with a durable smooth leather-like finish. This sandal features Birkenstock's signature contoured cork/latex footbed, carefully shaped for utmost walking comfort, as well as an adjustable strap and shock absorbing EVA sole.