Giro Ultra Light Aero Shoe Cover If the road gets wet and slippery, you should be prepared and hopefully have the Ultralight Aero Shoe Cover with you that gives your feet enough freedom of movement to get out even the last few seconds. When it comes to your cycling shoes, a little protection can make a lot of effect. The Ultralight Aero Shoe Cover cuts through biting weather and helps you get the last seconds out of your run, not least thanks to the precisely fitting Lycra design for optimal aerodynamics. Features: premium elastane outer material reinforced sole area super stretch neoprene material: 60% polyester 25% polyurethane 10% cotton 5% elastane.