It's more round but I can fit this Giro model (medium), compared to Nutcase style.

Round helmets normally don't fit right on my head shape and I end up having to try on a large size which looks ridiculous on me, because a round Nutcase model looks more squat and much wider in shape when one looks straight at my face. Same problem with Bern models and Lazar models that are round shape.

But this Giro model fits me just right and does have dial strap adjuster at the back of the helmet to deal with tightness of the helmet.