The Easton EC90 SL ISA Seatpost combines Easton's superlight unidirectional carbon with their patent-pending saddle adjustment functionality, allowing for perfect fitment.Easton's ISA technology allows you to refine your positioning without needing to undo your rail clamps for each minute tweakSaddle angle is then locked in place so you have the confidence your saddle will stay put after you find your fitItem SpecificationsClamp StyleStandard RailsColorBlackDefined ColorBlackDiameter27.2Length350MaterialCarbonOffset (mm)20 Easton EC90 SL Carbon Seatpost Seatpost UPC: 821973354996