Torsional grooves enhance natural foot flexion during transitions

A true barefoot trail runner for cooler, wetter conditions, the Primus Trail III AW FG also excels at fast hiking, fastpacking and other speedy, hardpack trail adventures. Its also popular for rainy, outdoor-forward city living. Its wide, thin and flexible for full feeling and natural mobility on uneven ground. The quick-lace system allows for fast on-off and easy adjustments. And the Firm Ground sole balances sensitivity, grip and speed on varied hardpack terrain, building natural strength with every step.

• Firm Ground Outsole
  
• Ortholite insole made of 98% recycled PU foam, which helps reduce waste and the use of virgin plastics.
  
• Tough Rubber Compound: Strong, non-marking, sticky grip
  
• Vegan
  
• All Weather
  
• Made from materials that are water resistant and non-absorbent
  
• Weight: 11.1 oz | 315 g (Per Shoe)
  
• Sole Base: 3 mm
  
• Tread Depth: 2.5 mm
• Upper: Vamp Non-wicking Textile (95% RPET, 5% Spandex), Overlay No-sew TPU (80% Polyurethane, 20% Resin)
  
• Lining 1 (100% Recycled Polyester), Lining 2 (Microfiber 40% RPET, 60% Polyurethane)
  
• Hardware: Toggle Polycarbonate, Lace End TPU
  
• Laces: 100% RPET
  
• Insole: Blind Insole (100% RPET), Turned Insole Backer (100% RPET), Removeable
• Ortholite Insole
  
• Outsole: Firm Ground Outsole (60% Polymer, 30% Silica, 10% Vulcanized Chemical)
• This Vivo fits true to size
  

Multi - directional traction for quick turns