ENVE, 2Bolt Seatpost - 27.2mm SB25Lightweight, easily adjusted, strong and comfortable the ENVE seatpost is equally at home on the trail as it is on the roadUnique patent pending twin bolt design making on the fly angle adjustments a breeze and ensuring that your saddle remains secured just where you want itMolded in one piece from uni directional carbon fiber to achieve lightweight, comfort, strength, and stiffnessIncludes cradles for standard round and oval saddle rails204g