I bought a pair of blucher-type moccasins from this company recently; I'm in between size 12 and 13. So my shoes arrive in size 12, and I put them on before running out the door. At work that day my feet were in pain, and I had a blister on the back of my heel that night. Fast forward two months, they are my favorite shoes. I can even slide them on and off without undoing the laces. My advice is that you will be fine, since loafers are similarly stretchy.