Sandro size 40 is equivalent to us 8 according to their sizing. Fits more like a US 6 in my opinion ;)) Maxi dress in gradient pointelle knit with zigzag pattern, spaghetti straps and scoop neckline at front and back. Sandro Women's pointelle knit maxi dress Zigzag pattern Spaghetti straps Low neckline Main fabric: 71% viscose, 16% polyamide, 13% metalized fibers Strap: 71% viscose, 16% polyamide, 13% metalized fibers Rib: 72% viscose, 15% polyamide, 13% metalized fibers Made in Italy