Cross pull straps are for the D Motion bridle. They pass through the D buckles of the noseband, cross under the throat and attach to the throatlatch of the D Motion headpiece to ride in Cross Pull mode. Once in place, the reins can be attached to the rings of the cross pull straps.
New English Collection: Stainless Steel buckles - Stitching in matching colours
D Collection: Brass buckles - Cream stitching