Nike Womens Shox Z Calistra ShoesPale Ivory pale Ivory oatmeal Sneakers Molded synthetic leather offers durability and a unique look Nike Shox columns provide resilient cushioning SKU: IR5510 100 Nike revisited the Calistra, an early aughts trainer, and gave her new life by sitting the low profile, ballet inspired flat on top of sleek Shox Z cushioning. Luxury echoes through the shoe with its molded synthetic leather upper, adjustable strap and clean, minimalistic palette.