Completely new chassis for an improved fit. Updated rigid waist system to hold pant in place. Durable 4 way stretch TruMotion main body fabric provides unmatched mobility. Laser perforation in key areas for enhanced airflow. Elimination of internal liner reduces weight and heat. New knee construction provides a sleep performance fit over braces or guards. Head and abrasion resistant leather knee panels. Critically taped seams to reduce chaffing.