Tirox is the name that Prologo uses for the titanium tubing employed on its short Dimension saddle, which measures 245mm long and 143mm wide.
Prologo uses carbon fibre for its hull construction and the hull itself changes thickness, getting significantly thinner towards the central channel.
The stepped-down nose has a box section underneath into which the rails are bonded. At the rear, Prologo uses its U-Clip system where you can add a mount point for a variety of accessories.
The NDR in the name means this version comes with deeper high-density padding. It was developed for mountain bike cross-country world champion Manuel Fumic, but is aimed at on- and off-road.
Even with the extra padding, the 207.1g weight is suitably light. The P.A.S.(perineal area system) channel is one of the best designs around; wide, well-shaped and running the full length of the saddle.
The real winner here is the CPC cover. The tiny volcano-shaped rubberised tubes offer incredible grip in the wet and give the surface a more fluid feel. In hot weather the separation from the saddle surface keeps you comfortable.
The Dimension is only available in 143mm width, but if it fits your sit bones then I’d highly recommend it.