These shoes are sooooooo comfy!! I'm in between a 7 and a 7.5 and unfortunately the 7 was too small and cramped my toes and the 8 was too large and slipped off the back of my heel. I love that the heel has elastic at the top so it will not rub and give you a blister. I would say that these fit true to size but if you're truly in between sizes, these probably won't work for you. I wish they made half sizes! Also, if you have wide feet, you will not want not want to get these. They are definitely better for regular or narrow feet.