Birkenstock Professional Kay SL Slingback Slip Resistant Soft Footbed Natural Leather Work ClogsThe Kay Super Grip offers all the advantages of BIRKENSTOCKs classic Tokio and Boston models in one. The upper instep strap can be folded back if required, thus providing additional support as a backstrap. The Super Grip sole is nonslip, promotes the ideal rolling motion, and is also oil and grease resistant. The EVA midsole in the leather version has additional soft padding that reliably and permanently cushions the foot with every step even if your