Old Navy bedroom shoes. Size 6?? Fits bigger

Old Navy. Black. Fur lined bedroom shoes. Says a 6. I’m a 5 1/2-6. Didn’t even try them on. These are the exact ones I get every few years. I think they were sized wrong. Maybe a 6 1/2 or 7. I got them in November. I tried wearing socks with them. Didn’t help much. I finally got another pair in January. Pushed these to the side and forgot about them.