Giro Apeckx HV Road Shoes DuPont Zytel nylon outsole is optimized for strength, stiffness and power transfer High Volume Fit last hugs wider or high volume feet closely without binding, crowding or discomfort High quality, microfiber upper is breathable, supple and water-resistant Molded EVA footbed with medium arch support for comfort Aegis footbed treatment uses an antimicrobial barrier to eliminate odors, discoloration and fading