ARMA Airflow Girth Tense Horse Supplement high purity psyllium in Assure Size:18" high purity psyllium in Assure Guard has been shown to naturally and effectively increase the production of butyrate The ThinLine Ultra Trifecta Cotton Half Pad reduces rider movement and prevents saddle slippage and is breathable to release heat and moisture Carefully engineered materials and Coolmax® technology take this ARMA Airflow Girt to the next level of comfort for your horse Additional features include pressure alleviating elastic inserts at both ends and stainless steel roller buckles and fittings for long lasting performance