Prologo Nago Evo Tri40 saddle is built for triathlon (and time trials, too). Its gaining popularity in the sport due to its Slide Control design, which holds you in place and allows the legs to have a free-swinging feel when you run your nose saddle down. The frame is made of specifically molded injected carbon to be more flexible in the mid-section of the nose and is backed by multi-density foam to be firmer at the rear. The frame is also stiffer in the back and tips up slightly at the tail to offer more efficient power transfer from the glutes and better support to the hips. Uses titanium rails, 280mm in length, 42mm nose width, 135mm back end width and weighs 222 grams.