Vivobarefoot Primus Trail Knit pairs a breathable knit upper with a grippy Firm Ground outsole for versatile trail and everyday use. Ideal for shoppers seeking a lightweight trainer with strong traction and a natural, low-profile ride. Key attributes: Gray | Graphite | Knit textile | Breathable upper | Lightweight construction | Aggressive tread for reliable grip on varied surfaces | Flexible sole for natural movement | Charcoal-grey lacing with secure lace-lock | Heel pull tab for easy on/off | Cushioned footbed for extended-wear comfort | Graphite knit body with black synthetic overlays | Mint-green lace lock and heel pull tab | Bold golden-yellow outsole with hexagonal tread | Visible Vivobarefoot branding on tongue and heel | Dimensions & fit: Sole thickness: 5.5 mm | Wide toebox for natural foot splay | Zero-drop sole for barefoot-like sensory feedback | Composition & care: Knit textile upper | Synthetic leather overlays | Firm Ground rubber outsole (60% polymer, 30% silica, 10% vulcanised compound)