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. Leather upper with knot detail at canter. Slip-on design with open toe. 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: 2 in Weight: 7 oz Platform Height: 1 in Product measurements were taken using size 6, width M (B). Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.