Design: A firm foot frame wraps around the supportive midfoot plate and spans from heel to toe, giving you more of a secure feel Reduced weight engineered mesh upper keeps you comfortable and light on your feet Full midfoot fit band allows you to pull the laces tighter to enhance the fit and enable faster cuts In-Shoe Comfort: A heel Air Zoom unit helps keep you supported and springy throughout your match Firm midfoot plastic piece provides optimal stability and transitions when cutting from side to side Supportive piece eliminated the need for rubber in the midfoot, which helps reduce the overall weight of the shoe Midsole foam in between the plastic and rubber, which wasn't on the Vapor 11, helps keep you light on your feet Durability & Traction: The herringbone traction pattern is made of our new rubber compound that's lighter than Vapors of the past Traction pattern allows you to decelerate, plant and back into position without feeling like you're rounding off your cuts Additional Details: Designed for wear on hard court surfaces