What about the concept of channels vs cut outs?
I am interest in Fizik? that say the saddle padding is better than cut outs?
Here is a quote
Topping the range is the flagship Arione 00, which uses a co-molded carbon fiber and rubber shell for selective stiffness and flex mated to fi'zi:k's wraparound Mobius braided carbon fiber rails and topped with a stealthy, one-piece black Microtex synthetic cover. Claimed weight is a paltry 135g and suggested retail price is a whopping €350.
Sitting second-tier at a somewhat more attainable €199 is the new Arione R1, which is built with a co-molded carbon fiber-and-nylon shell, a three-piece Microtex cover, and braided carbon fiber rails that attach to the shell in a more conventional fashion. Claimed weight is still-feathery 145g.http://www.cyclingnews.com/features/eur ... collection
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Strangely I find my Arione 00 more comfortable than the R1's they have replaced, the R1 has more padding but it's a softer density and I find this uncomfortable, I think the Twinflex design in the 00 give it the edge in comfort.