The Crystal Mules by Magda Butrym are u pdated signature sandals with a crystal embellished strap, adding sparkle to the 8 cm plexi glass heels with their metallic footbed Details Crystal embellished strap Metallic Footbed Upper; Pvc/Suede (Capra Hircus). Insole; Leather, Sole; Leather Size & Fit 8cm heel