Our saddle pads for Spanish saddles are available with the 2-pocket CORRECTION^® System on request; we supply three 5 mm-thick felt shims (POLY-FLEX^®) for each pocket, offering the same pressure relief as a good quality new saddle, padded with wool and horsehair. MATTES developed the CORRECTION^® system to allow flexible and easy changes to saddle fit by up to 30 mm: to easily compensate for the rapid physical development of young horses in training, for horses that have been out of work for some time, or for trained horses which change shape a lot during the competition season, whenever quick alterations are needed. Simply add extra shims, or just as importantly, remove them, to suit the horse’s changing shape. It is crucial to balance out long-term irregularities in conformation. These should never be corrected by adjusting the saddle itself! You can order these felt shims as a set here. These are suitable for Mattes Spanish saddle pads. To ensure that the shims fit your pad, please select the size.