Sydney Cushion Buckle Birko-Flor Graceful PearlEDITOR'S NOTE The Birkenstock Sydney Cushion Buckle Birko Flor Graceful Pearl proves that fashion and functionality can go hand in hand. With its two simple straps, its a real hit with women who want both high fashion and comfort. This sandal version has a silky sheen finish. The shiny, gently rounded padded buckles are especially eye catching. The upper is made from the skin friendly, hard wearing synthetic material Birko Flor.