The Corrector's patented shields are put in the Len's PROTECTION BARREL SADDLE-PAD: a 3/8" thick Pad with a 3/8" Liner pad. The 3/4" thickness plus the 1/8"shields will Lift your saddle a Half inch or more in front than in the back. This is all you normally need for a balanced ride. NO SHIMS to fool with, NO WASHING except the LINER PAD, An ALWAYS CLEAN FAUX CROCODILE LEATHER top / NOT so SLICK as FELT ! The patented cool center cut to let the pad move with the horse is still there. The 3/8" thick Cool Polyester FELT LINER has a marine vinyl center strip. The Liner absorbs little sweat & drys quickly after hosing off. Len's PROTECTION PAD has oil tanned wearleathers and center reinforcement strip. PICTURED BELOW: the 1/10" thick aircraft plastic shields have 112" of 1/8" slots for venting & heat transfer & are the secret to passive control of saddle pressures. They are molded to a basic horse-shape where they're supposed to ride. Front shields are protecting the shoulders during STOPS, BENDING & TURNS while positioning the saddle out of the way of the HORSE'S NATURAL SHOULDER MOVEMENT. This is done via the 3" of extension of the pad in front of your saddle. Always striving to make the best there is, Len