You bought a pair of boots.
You've been looking for boots like these for a while. They are perfect in every way- great color, comfy, great price.
They are a size too big. Not a half size, an entire size. And you have size 9-10 feet, so you are already self-conscious about how large your feet are. You are convinced these boots make your feet look even larger. In actuality, they are about .5 cm too long and maybe a little too big all around the foot/ankle. But you can wear the boots. Especially with socks they are pretty comfortable. They're just big. And what if they stretch out?
And now the store is sold out of them. You cannot exchange them for a size smaller, but you can return them or exchange them for a different style.
What would you do?