The Primus Knit is a neutral road running shoe family by Vivobarefoot. This is the original product in the family.
It's a zero drop model. It was released in 2019. Its support type is designated as neutral, meaning that it's designed for runners with neutral pronation. The latest model in the family is the Vivobarefoot Primus Knit II.
Based on our monitoring of prices across the internet, it's currently in the cheapest 30% of running shoes today.