So I was looking for a spare ring to wear on my ring finger when I didn't want to wear my real rings (water activities, Mediterranean cruise, home improvement projects, etc). I didn't want to pay too much and I didn't want anything flashy, and this ring is perfect. I agree with sizing down.  It's maybe a quarter size smaller than advertised. I wear a 5 and ordered a 5 and this ring is only a smidgen smaller than my real rings.  Def not equivalent to a 4.5 though.