Wintec Pro Dressage Saddle CAIR Flat seat CAIR Cushion System provides significant performance advantages in the way it uses air technology to distribute the rider's weight and cushions your horse's back EASY-CHANGE Gullet System: select the optimal gullet width for the horse's current shape and muscling (comes with Medium Gullet Plate others sold separately) EASY-CHANGE Riser System: make adjustments within the saddle's panel for the optimal balance and clearance (risers sold separately)