Castaner Diana Espadrille in Tan. - size 40 (also in 36, 37, 38, 39, 41) Castaner Diana Espadrille in Tan. - size 40 (also in 36, 37, 38, 39, 41) Canvas upper with rubber sole. Sling-back styling. Leather footbed and lining. Crisscross vamp straps. Almond peep toe with jute wrapped wedge. Approx 65mm/ 2.5 inch wedge Approx 13mm/ 0.75 inch platform. CSTR-WZ172. 025634-2017. The first Castaner atelier was founded in 1927. Since then they have turned a popular form of footwear into a sophisticated product closely associated with design and fashion. Their encounter with Yves Saint Laurent in the 1970s went down in the history of world fashion and together they created the first wedge espadrille. Today, after 90 years, their product has a worldwide reach but their essence remains as authentic as it was in 1927: tradition craftsmanship and natural materials.