This saddle uses prologo39s 39flat39 saddle shape that gives the rider a comfortable seating area on short to medium rides with the weight being shared equally throughout the saddle rails nack nano carbon fibre rail carbon fibre kevlar and aluminium filaments seat post clamp area treated with the production process called braided carbon rail bcr this is done in order to obtain the perfect fusion and uniformity of the several layer types of fibres and materials the result