Black recycled polyester-blend square-toe slingback sandals from GANNI featuring square toe, branded insole, tonal stitching, knotted construction, slingback strap and kitten heel. POSITIVELY CONSCIOUS: GANNI measures the carbon footprint of every item, and on each you'll find the Climate Compensated label, showing they've covered the cost to make that footprint carbon neutral.. POSITIVELY CONSCIOUS: This product is made with recycled materials or via eco-certified production processes, so you can be confident you are choosing positively..