Selling these for wife. Bought at those consignment port stores during cruise- claims they fit first but now they are too big now that it’s after the long vacation. Took 3 pairs to finally figure out the right size for her. As far as authentic, I was told from wife seller ran out of the big g so sold the smaller g for 20 percent more bc they are more rare. That’s what I was told. And she spent $280 for it. Selling for $250, and these were unused so hope it’s reasonable. Comes with Gucci dust bag