The Ultra II is barefoot amphibious footwear for young adventurers

Hit the trail to rewild yourself and reconnect with nature

designed for enhanced barefoot performance and durability

sourced from free-roaming cattle

The Foot Essentials Kit is your go-to solution for maintaining and improving foot health

Primus Trail Flow Mens Dark Shadow Size:44eu The Ultra II is barefootThe 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.