Vivobarefoot Primus Trail FG 3.5 pairs barefoot design with a firm-ground, hex-tread outsole for reliable grip on everyday surfaces and light trails. Lightweight and breathable, it supports natural foot movement while adding stability where needed. Key attributes: Blue | Polyester mesh | Breathable upper | Quick-drying | Puncture-protected outsole | Firm-ground traction | Toggle lacing system for quick adjustment | Padded tongue and heel collar | Removable insole | Hexagonal tread pattern | Gum-coloured rubber outsole | White hexagonal brand logo | Dimensions & fit: Outsole: 3 mm rubber + 2.5 mm tread pattern (puncture protection) | Minimalist / barefoot fit with low stack height | Refer to EU/UK/US size chart for sizing | Composition & care: Upper: 71% polyester, textile, synthetic | Outsole: rubber | Insole: Ortholite (textile/synthetic) | Wipe clean with a damp cloth; use soapy water (avoid detergents) for heavier dirt. Remove insole to air dry at room temperature; avoid direct heat. Reapply protective spray as needed to maintain water resistance.