Tredstep Symphony No 4 Nero Breeches. The Tredstep Nero Breeches are the latest generation of Symphony breeches, the Nero offers Tredstep’s signature Motion Fit Design coupled with their new ExCell fabric and exquisite styling details. Tredstep’s ExCell fabric’s unique yarn construction harnesses the natural goodness of Cotton formulated with Lycra ensuring four way stretch, enhanced shape retention and advanced moisture wicking. The outer fine twill is extremely durable but soft to the touch and the inner surface has a gentle skin friendly feel providing all day comfort and performance. The unrivalled design features include a super flattering Definition Waistband, Integrated Cuff and Articulated Knee Patch to ensure the rider is always comfortable and ready for a top class performance.