Fizik Gobi XM K:ium Saddle
New XM design has greater Cordura scuff guard coverage and K:ium rails. It is also a bit wider in the rear for greater stability. K:ium rails provide an 8% weight reduction compared to titanium and provide better vibration absorption. Wing Flex sides for better leg movement. Tail flex offers more downward flex the further one moves back on the saddle rear.
This came on my RM Slayer. I was skeptical at first, as it looks skinny and thin, but it actually is pretty comfortable. The fabric and stitching have been durable and the saddle has remained comfortable.