Dimension NDR features the same overall shape as the standard dimension saddles with 3mm of extra padding and side protectors to avoid scratches and abrasions when the going get a little too tough Dimension saddles feature a redesigned overall shape, with shorter nose made to be more comfortable for both men and women riders by spreading pressure areas more evenly - especially in an aero position The increased 143mm width, helps to distribute the weight of the athletes on a larger surface, ensuring greater comfort for long rides Nack models feature a Nano Carbon composite rail paired with reinforced seat clamp area for the perfect fusion of performance and reliability PAS - features a channel in the seat to alleviate pressure and numbness in the pelvic region by promoting healthy perineal blood flow Carbon injection monocoque base Enduro/MTB Nack-Carbon NDR Microfiber Grey/Black 245mmx143mm 157g PAS Carbon Injection UnisexUPC/EAN/GTIN: 4716112780391