Unconventional. Selle Italia has never been a brand that sticks to a single mold and doesn't reach for progression. Where other saddle brands have stayed true to one shape, leather uppers, and steel rails, Selle has been striving to reach beyond, harnessing progress to its core. The SLR TM Boost Superflow Saddle is no different. It features a unique shape built to create comfort on road or mountain bike rides, with generous flex that's tuned to support you while you hammer on the pedals, and provide just enough pressure relief to keep you comfortable through long miles. It's built with a large central channel cutout, which may have shifted into the mainstream of saddles lately, however the channel is continued all the way to the end, offering better flex under pressure to mirror your body's movement when you're putting down serious efforts, while manganese rails provide enough support to make sure the saddle doesn't waiver under pressure. It comes in two sizes to accommodate different sized riders, and different width sit bones, enabling those with narrow and wide sit bones alike to enjoy the tuned flex and comfort of the SLR TM Boost Superflow.