Product Story We'Ve Elevated Our Classic Running System To Unseen Heights With The Rs-X, For Those Born To Stand Out From The Crowd. Our Rs-X Millenium Celebrates The Technology Boom Of The Early 2000S, Expressed In The Exaggerated Shapes And Innovative Play With Overlay And Colour Stories. Features & Benefits Pu Midsole: Puma’S Polyurethane Midsole Assists A Smooth Foot Stride For Comfortable Wear And A Futuristic Look Running System: Puma'S Comfortable Cushioning Technology Celebrates The Reinvention Of A Unique Moment And Movement In Culture Details Low Boot Profile Mesh And Synthetic Leather Upper Rubber Outsole Lace Closure Rs-X And Puma Cat Logo At Tongue Puma Formstrip At Lateral Side