Too Small
EvelinYeseniaR292043195
If you're going to buy these, definitely go a size up. I'm typically a 4 but these are way too small, I'm afraid not even the 4.5 fit. I do have to say they are very comfortable and cushioned.

Confeccionados para brindar una comodidad duradera y soporte, los MC Trainer 4 se actualizan con una espuma más suave y una base más baja para una sensación más potente. La parte superior de malla ligera y transpirable se combina con la sujeción y la suela exterior flexible para brindar comodidad total en cada movimiento.
Nike MC Trainer 4
Confeccionados para brindar una comodidad duradera y soporte, los MC Trainer 4 se actualizan con una espuma más suave y una base más baja para una sensación más potente. La parte superior de malla ligera y transpirable se combina con la sujeción y la suela exterior flexible para brindar comodidad total en cada movimiento.
Entrega gratuita en pedidos de más de $999 y devoluciones gratuitas en un plazo de 30 días para miembros de Nike.
3 estrellas
Too Small
EvelinYeseniaR292043195
If you're going to buy these, definitely go a size up. I'm typically a 4 but these are way too small, I'm afraid not even the 4.5 fit. I do have to say they are very comfortable and cushioned.
Runs super small
claudiab629993358
I’m usually a size 8, but Nike is the only brand where I always have to size up to an 8.5. All of my Nike sneakers are size 8.5 and normally fit me perfectly. Unfortunately, this black pair runs VERY small. I ordered my usual Nike size 8.5, but my toes hit the front of the shoes and there is absolutely no extra space. They feel more like a size 8. I’m wondering if the sizing issue might be why this style is on sale. I do like the shoes, though, so I’m going to give them another try and order a size 9. Hopefully that works! Definitely consider sizing up in this style.

Nike MC Trainer 4