Professional's Choice SMX English GirthIdeal for the rigors of training and competition, the non slip SMx English Girth is especially comfortable for your horse because the combination of elastic and buckles on each end provides uniform pressure and even pull. Professionals Choice recommends replacing your girth at least every 2 3 years, depending on use. It is recommended to regularly check your girth for signs of wear and tear, and replace immediately if any issues are detected.