Design: Engineered mesh for a good breathability and support made from 100% recycled polyester The rounded edges and Carbon shank speedboard limit the shoe torsion and increase energy return during side cut movements TPU insert on the medial side (with R. logo) to extend the foot bed enhance the stability and improve the precision 100% carbon fiber Speedboard(R) for maximum energy return Durability & Traction: Outsole hard foam of 75C to absorb heel impact along with a contact surface for abrasion resistance Medial and lateral side, the contact surface is higher for abrasion resistance where as the center part pattern is more aggressive for traction Additional Details: Heel to toe drop: 10mm Weight 12.9 oz