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An exotic saddle is like a normal saddle of the same type except that it is designed for an unusual mount, such as a pegasus. Exotic saddles come in military, pack, and riding styles.
A military saddle braces the rider, adding a +2 circumstance bonus to Ride checks related to staying in the saddle. If a character is knocked unconscious while in a military saddle, he or she has a 75% chance to stay in the saddle (compared to 50% for a riding saddle).
A pack saddle holds gear and supplies, not a rider. A pack saddle holds as much gear as the mount can carry.
The standard riding saddle supports a rider.