We find this Vivo fits big, especially if you have a low volume foot. Consider taking one size down.

The Primus Outsole is a light and thin 2mm performance outsole that's designed to put as little as possible between your feet and the ground. The side wall profile is as low as it can be, giving it a slightly lower profile towards the heel, and the sole subtly overlaps the toe — offering enough protection for urban environments, without compromising natural movement. Strong geometric shapes lead to strong feet, so the tread pattern uses our signature hexagonal design to help multidirectional flexibility and grip.