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 tweak
• Saddle angle is then locked in place so you have the confidence your saddle will stay put after you find your fit