Description Arion D4 Dressage – 18.5″ Medium  (UC283) Seat size: 18.5″ Width: Medium Serial No: D 4 21 235 185 02 A / FG 5 0 “Arion’s Monoflap Dressage Saddle is designed for maximum movement, connection, and comfort for the horse and rider. With the perfect combination of extra deep seat and front blocks. The narrow crotch and wide panels will help you to feel the slightest movement in your horse’s back.” FSS Item: Arion3 / UC283