Lightweight and Protective Cover for Your ShoesThe new Giro Knit Shoe Cover with Cordura fabric protects your cycling shoes from road grime, adds a touch of warmth for transition weather and helps light up the night with reflective ankle cuff thread.Fabric & ConstructionPremium knit upper with Cordura.Reflective ankle thread.55% cordura.20% lycra.10% polyamide.10% elastic.5% reflex nylon.