The ENVE Melee and Fray framesets require the ENVE Aero Seatpost but want to let each rider choose their ideal configuration. This is the 0mm setback version for riders who prefer that option. There are also two length options so everyone can have their ideal fit. Its D-shape keeps it aerodynamic without losing the comfort you need on varied terrain. With a carbon design, riders can count on the level of performance they expect from any ENVE product.