UGG slipper 9 size

I bought these slippers in the fall and only wore them once. They're perfect, I'm just too hot! 😵‍💫🥹 I normally wear a size 8 or 8.5 and I preferred the 9, but the guy mentioned the fur would flatten. I'm not going to flatten them! 🥹😂 Sorry, I didn't get a box (perfect for a gift)