Yellow nylon or poly braided rope with curb bit. Headstall is a simple loop over the crown. With matching reins and curb strap. All yellow rope is braided onto the bit. There appears to not be a way to remove it without cutting the rope.
Bit is 5" mouth standard curb bit, nickel plated.
This could make a great little catch bridle when getting a horse from a large field, to jump on bareback and ride back to the barn.