2XU Men's Compression Cycle Bib Short 65% Polyamide/35% Lycra Imported Y Elastic Grip for comfort and security 2XU's Proprietary 105D/CK compression fabric for the ultimate in muscle stabilization and increased endurance Italian Fusion Pro 2 Chamois - multi layer, multi density w/ revolutionary perforated membrane technology for maximum moisture management + comfort 2XU 70D KINETIC SPEED fabric for improved aerodynamics More power and endurance with heightened comfort and less fatigue