Authentic; These Prada flip-flops are forever a gym! Even though they look like this, they still going strong for the past year. You can get them fixed at an old cobbler, they can redo this whole shoe. But I haven’t had any problems and I’ve had these for three years, the serial number rubbed off, but you’ll see that in the photos. These girls are still good, I wear them everywhere! These shoes have lasted longer than my Tori Burch, sandals! Cheapest on Poshmark!!! Disclaimer: During Posh parties I usually lower the price but if it doesn't sell, it goes back to regular price $100