Signature Skate for a USD Legend - Honoring a Legend. Without a doubt, Aaron Feinberg is one of the best aggressive skaters… ever. For its 25th anniversary, USD is proud to honor a true legend who has transformed the sport and left a legacy few can match. The USD Aeon Aaron Feinberg Pro 60 25Y is a feature-packed, high-performance signature skate designed to meet the high standards of Aaron Feinberg himself.