Primus Flow Knit Mens Eclipse Size:41eu plus a thin Firm Ground

plus a thin Firm Ground sole balances barefoot sensation with grip

The Primus Flow is the newest member of the Primus family

the new Primus Sport IV

This simple two-piece kit includes a Mini Cork Ball for targeted pressure and a Mini Cork Roller for gentle rolling massage across the soles of the feet

while the multi-terrain outsole ensures traction on all surfaces

Primus Flow Knit Mens Eclipse Size:41eu plus a thin Firm GroundThe Primus Flow Knit combines lightweight barefoot performance with adaptive, sock like comfort. A seamless knit upper moves naturally with your foot while staying breathable and secure, and the ultra thin sole keeps you closely connected to the ground. Built for natural movement, its ideal for running, training, and everyday flow where flexibility and feel matter most.