Wintec Pro Endurance Saddle w/CAIR 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 (edium gullet installed other sizes sold separately) EASY-CHANGE Riser System: make adjustments within the saddles panel for the optimal balance and clearance (risers sold separately) FlexiContourbloc can be moved forwards and backwards, or on an angle to mirror the riders individual position