T2.0 Rail The T2.0 rails are light high strength Chromo rails. PAS This is a processing of the base where a channel has been created down the centre to eliminate pressure from the pelvic area. Ensures optimum comfort & no numbness. Active Density Multiple padding zones along the saddle. High density at the rear, medium in the middle & low at the front, this gives the maximum level of comfort where its needed & eliminates pressure during pedal strokes.