for the womens FitFlop sizing guide. Click to learn more about the biomechanically engineered, ergonomic FitFlop footbed. Treat yourself to comfort bliss with the Twiss Crystal Slide from FitFlop. Rhinestone-adorned fabric upper in a classic slip-on silhouette. Soft microfiber interior lining helps prevent abrasion. Built-in arch support for added comfort. Triple-density EVA midsole with sophisticated Microwobbleboard technology. Please click for a video about Microwobbleboard technology. Received the APMA Seal of Acceptance, for footwear found to promote good foot health. Textured man-made outsole delivers long-lasting durability on a variety of surfaces. Imported. Measurements: Heel Height: 1 3 4 in Weight: 8 oz Product measurements were taken using size 8, width M (B). Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.