Bates & Wintec Saddles Easy-Change Riser System Front/Centre/Rear Shim Inserts To Alter Saddle Fit. Available in Pairs for Dressage/GP Saddle styles or Pony/Jump Saddle styles. Front Risers in 4 mm, 8mm, 12mm or 16mm in Dressage/GP or Jump/Pony Styles.
eBay