RIEKER. 41390-10. DORIS 90. SKY-ICE BLUE. A simple but stunning sling-back sandal. Rieker s Doris 41390 has a soft leather and textile upper that wraps comfortably around your feet. Forming a high front from which the elasticated sling back extends the vamp is divided into three columns. The central column is decorated with an abstract cut-out floral pattern and is separated from the two side shafts columns by double track stitching.