We've always considered the Gobi XM Saddle to be a mountain bike friendly cross between Fizik's Arione and Aliante saddles. It features a somewhat flat profile with WingFlex technology like the Arione. The shell has tines, like a comb, which are suspended in place by an injected elastomer, creating controlled flex. Likewise, the TailFlex works the same way. These flex zones are designed to give more than solid plastic and as a pattern of use emerges, the sections soften to yield to your body. The rest of the nylon shell is reinforced with carbon fiber giving it enough extra strength and stiffness to shed any extra grams. The K:ium rails pronounced Koom, rhymes with zoom offer a better ride than titanium rails. They're 8% lighter, have greater strength to weight ratio, and absorb more trail chatter. The vibration damping is thanks to silicon being added to the alloy. There is also some chromium content. It makes the rails nice and shiny and increases corrosion resistance, which helps with overall durability. The Fizik Gobi XM Saddle is designated as an XM, or cross mountain saddle and is available in Black and White. It's longer than the Aliante and has a similar width to the Arione at 290mm long and 130mm wide. The Microtex covering offers just enough traction for your rear to be able to stay planted when you're digging hard on the pedals up rough climbs, but the slick finish on the thigh glides won't keep you from being able to shift yourself fore and aft on the saddle when you need to find the right weight balance. The Gobi XM Saddle possesses Fizik's Integrated Clip System ICS, a means by which to attach a Fizik blinky light or saddle bag directly to the saddle without the need for straps.