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From Pathfinder Lost Omens Knights of Lastwall, which isn't enabled.

Swiftmount Saddle

ITEM 7
UNCOMMONCOMPANIONINVESTEDMAGICALPRIMAL
Price 360 gp
Usage worn saddle
Bulk 2

This sturdy leather saddle was designed to improve communication between mount and rider, allowing even inexperienced knights to command their mounts in battle. A swiftmount saddle grants a +2 item bonus to Nature checks made to Command an Animal for anyone who is riding the creature wearing it.

Activate Interact
Frequency once per day
Requirements You're adjacent to the creature wearing the swiftmount saddle and could Mount it
Effect You Mount the creature wearing the swiftmount saddle.
Pathfinder Lost Omens Knights of LastwallOGL