Mainly used for getting your dog walking straight into the sheep and putting square sides on.  I have now refined these to what people have requested and have put buckle and long strap on the underbelly and also put a Dee in the middle on the underside of the flank strap which alows for a rope to be conected between the back legs. The collar and flank straps are now made with triple thickness pollyesta for better durability.  Two Dees on the neck collar, two large rings and 1 Dee on the Rib or flank colla.r