seat measures 18" with a #3 Flap - flaps measure 13.5" bar to bottom and 13.5" across - the tree measures 5" dot to dot - which would be considered a medium wide to wide tree.This is a simply beautiful saddle!!!!!!  Lovely hunter green piping!PRISTINE CONDITION 2016 Devoucoux Biarritz S Custom Saddle with D3D Technology Panels.• Size 18 with size 3 (longer) flap.• Medium Tree. FITS MOST HORSES• Has D3D panels. The NEWEST TECHNOLOGY. Molds to your horse and provides SUPERIOR COMFORT AND FIT for horse and rider• SUPER SOFT Dark Brown Buffalo Leather with CLASSIC Hunter Green piping.• GORGEOUS CUSTOM MADE by hand in France• MINT CONDITION. Ridden in approx 10 times. Does not fit new horse.• Stirrups and leathers not included.• Additional description from DEVOUCOUX: Biarritz S is intended for show jumping, and has a flat, narrow seat that gives great freedom of movement and enables the rider to shift his center of gravity easily. Its sporty, clean line makes it a favorite with top riders.• Sold as is• All offers considered. Serious inquires only.• Review pictures and item specifics carefully. Pictures are apart of the item description. If there is any imperfections and defects, they will be shown in pictures and/or noted in description.I am slightly negotiable on the price.  Shipping is $45 - Insurance is $20 for a $65 total ship fee.  Shipping will be a bit more to the west coast.  3 day Trial is available.  Please contact me for details.