I typically wear a women's size 8 and bought these boots in an 8. They are the absolute comfiest, warmest, coziest boots I have ever worn. They fit perfectly with big, thick socks but if you were going to wear them with thin socks I would recommend sizing down one full size. The sole is very grippy and gives you a ton of traction. They look adorable over top of jeans or leggings. They're like wearing super insulated slippers. I could wear these all day! Contemplating buying a second pair, they're my new favorites shoes EVER!