authentic! Gucci platform sandal in a women’s size 40 which is equivalent to a women’s size 10. Used but in great condition only worn twice. I am typically a 9.5 of women but had to size up to the 10. Dimensions: 4 1/2" (114mm) heel; 1 1/2" platform. Adjustable ankle strap with buckle closure, alongside leather upper, lining and sole. Includes box!