Zoot Women's W Kiawe 2.0 Running Shoe 100% Textile/Synthetic Imported Rubber sole Heel measures approximately 1.25" 6 millimeter drop Bare fit internal liner creates a sock like fit, locks the foot in place with your choice of regular or triathlon stretch laces. Z bound insole for durability and soft internal feel ZVA provides dynamic shock absorption, carbon span supports the mid foot while allowing you to drive off the toes ZCR,ZPU and constant ground contact make for a smooth durable ride with plenty of traction throughout the stride