Inflatable Fun Derby Horse Races is exciting race game. Host your own Inflatable Derby party! This inflatable pony racking game is a crowd pleaser and fun to watch! Great for pony racing, pony battles and more fun acfivifies. Small; Medium and large size availoble. Small size are for 3-5 yeas old, Medium size are for 6-12 yeas old, Large size are for teens and brave aduits, Great for dichic races, team race.