Lightweight and breathable, the PI Aero Lycra Shoe Cover is built fast and light for the ultimate in aerodynamic efficiency.  This shoe cover is great for both cool days and for the aerodynamic advantage.  For specific design details see bullet points below:

• Breathable lightweight protection
• Stretch AeroSensor for easy on/off
• Partial zipper closure ensures a snug aerodynamic fit
• Recommended for road shoes with external cleats