The Standard Cotton Square Western Saddle Pad looks good under any western saddle pad. This pad is available on Short Order which takes around 2 weeks + Shipping time.
via Products – Pink Equine https://www.pinkequine.com/standard-cotton-square-western-saddle-pad-black-brown-l/
via Products – Pink Equine https://www.pinkequine.com/standard-cotton-square-western-saddle-pad-black-brown-l/