Store › Jumping Class Image 1 of 1 Jumping Class $10.00 Exhibitors compete over a course of 3 to 6 jumps. Jump heights are no higher than 18". Trail Class: Select Trail Class 18 & Over Under 18 Green Horse Green Handler Quantity: Add To Cart Added! Exhibitors compete over a course of 3 to 6 jumps. Jump heights are no higher than 18".