• Unique combination of luxurious lambskin Half-Pad with flexibility to create a front or rear riser using foam inserts under the wool • Offers additional shock absorption • Adjusts to changing body shape or different saddles. • Swan-Neck and clear-spine relieves pressure, allows air flow and improves fit • Set of 4, 13mm insert pads, with additional 9mm insert pads included • Medium: 16-17. Large: 17.5-18.5