Gladiator Sandal from Old Navy

Real leather, black gladiator sandal. Worn once. Bought as a necessity on vacation and they are a bit too big. They say size 7, but I listed as a 6.5. I wear a 6 and they aren’t huge so I’m not sure they’re a true 7. I believe they are leather, they were more than I thought I’d pay at Old Navy!😆 Length is 9 3/4” long- see pic