The Primus III is an ultra-lightweight barefoot trainer for preschoolers

and drain and dry quickly

rugged hiking boot with all-terrain capability and excellent breathability

with guided exercises and weekly exposure recommendations so your feet and lower legs can adapt without rushing or overloading

while keeping out trail debris

Primus Trail Flow Mens Dark Olive/Gum colour Multi The Primus III is anThe Primus Trail Flow is a lightweight, high performance barefoot trail runner built for moving naturally across varied terrain. With a breathable recycled mesh upper and a grippy, low profile outsole, it delivers strong ground feel while keeping you agile and connected. Designed for responsive movement, its ideal for trail runs, hikes, and off road exploration.