Ultra Aero fabric on outer thighs for maximum aero efficiency Mobil Mesh bib for superior ventilation and support Upgraded Formula FX chamois with 3D construction front and Poron at sit bone for better performance Zap leg band with silicone gripper provides slip free comfort and high visibility during night rides Extra stow pockets on thighs for easy access and secure storage Feature loaded endurance bib shorts with additional storage pockets and maximum visibility to stay out there longer.