Trust Stockholm Running Martingale AttachmentWe love this running martingale attachment because it is made with a harder leather and closed forks. The TRUST Stockholm is a closed fork that is detachable. Closed forks prevent the horse from grabbing them with their mouths. The leather on the inside of the fork is robust. The TRUST Stockholm can be used with TRUST breastplates. The leather strap features a roller buckle ensuring easy attachment to the breastplate. The fork has a unique buckle that