Please click for the El Naturalista size chart. ; Slip into a casual yet elegant sandal with the Contradicion ND31 from El Naturalista. ; Premium leather upper with thick strap details. ; Easy slip-on style with functional buckle for a comfortable fit. ; Breathable leather lining. ; Anatomically designed insoles are made of recycled cork. ; Natural rubber and recycled cork outsole. ; Imported. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 40 (US Women's 9-9.5), width M (B). Please note that measurements may vary by size.