ISM PS 1.0 SaddlePS 1. 0 is a fresh look for the Time Trial saddle. It features the same 15 series padding and sloped front arms, but with new sleek graphics. Similar to the other Performance Short saddles, the PS 1. 0 features a slight upward slope at the rear providing superb hip support when your body is rotated forward in the aero position, or an aggressive road riding position. This tends to be preferred by athletes that don't move around on the seat excessively