Apollo air multi-risers have 3 different pockets on either side each containing 3 breathable shims. This makes 18 adjustable air inserts allowing the front, middle and rear section to be risen or lowered to 3 different thicknesses. This allows great versatility with small alterations creating the perfect fit every time. The inserts are made of Apollo air mesh and alleviate pressure points and keep the horse cool when being exercised. They are inserted into non-slip mesh that stops saddle slippage. A useful tool for the changing shape of a young horse, horses with muscle wastage, high withered horses, sunken backs etc.