The size is 250 x 140mm and the Nack version is only 169g. Saddle weight with nack (carbon) rail: 169g. Introducing the Prologo Scratch M5 Saddle, outfitted with a long nose 'T-Shape' design and the MSS (Multi-Sector System), which creates 5 mapped zones that support the rider in aggressive and non-aggressive positions.
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