NIB, Ben & Jerry's Nike Chunky Dunky sneakers, size 4 men's/5.5 women's

I bought these for my Son from a website that doesn't take returns or exchanges, they didn't fit. He was wearing kid's sizes at the time and i thought they would be fine. Men's size 4/women's size 5.5. They have been stored in the original box. Smoke/pet free home. Thanks for looking!