Primus FG All-Weather

Summary: Waterproof barefoot trail shoes with 6.5mm semi-aggressive tread and medium width toebox.

1. Overview

The Primus FG All-Weather by Vivobarefoot is a premium midweight barefoot shoe for men and women designed in the United Kingdom with excellent overall versatility.



*Note: the Overall score is a measure of how "barefoot" a brand/product is and how useful it might be in general.

Basic Details

  • Thin: [6.5mm] sole for proper ground feel.
  • Flex: [good] bend for natural movement.
  • Width: [medium] foot-shaped toebox for splay.
  • Zero-Drop: [0mm] same height in front/back.
  • Barefoot: [feels] like being fully barefoot.

2. Features

The Vivobarefoot Primus FG All-Weather has a medium foot-shaped toebox, thin 6.5mm outsole, good flexibility, and semi-aggressive tread, and is made with synthetic, recycled, vegan, sustainable, organic, rubber, natural, and ethical materials.




  • Gender: [men/women] in multiple styles.
  • Materials: [natural] recycled, vegan, sustainable, organic, rubber, ethical.
  • Toebox: [foot-shaped] for natural toe splay.
  • Volume: [medium] for raised arches.

3. Performance

The Vivobarefoot Primus FG All-Weather provides excellent breathability, is waterproof, has a semi-aggressive tread that can last for 5000+ miles, and is ideal for hiking and trail running in cold, warm, hot, and freezing climates.


5000+ miles


  • Airflow: [excellent] breathable/wicking.
  • Water: [waterproof] for wet terrain.
  • Activities: [2] hiking, trail running.
  • Climate: [4] cold, warm, hot, freezing.