NIKE Womens Shoes Shox Vaeda with Swarovski Crystal Bling On Swoosh Size 7 Black Only High Quality Swarovski Crystals Are Used On these Customized Bling Style shoes. Both Trademark Swoosh Graphic On each shoe are fully covered in Swarovski Crystals. The synthetic upper features supportive overlays for flexibility and enhanced fit and feel. Outsole features a combination of carbon rubber in the heel for durability and rubber in the forefoot for a plush ride. Swarovski crystals have been the most sought after crystal by jewelry designers. They are known for their sparkle and brilliance. They are second to none in quality and craftmanship.