Mustang Bitless Halter Bridle Bitless halter bridle with chin strap is made from 3/8" two toned diamond braided poly rope and features a nickel plated easy-on clip and adjustable side. Chin strap aides in keeping the halter secure and in place when used with reins. The halter bridle is uniquely designed with pressure points on the nose and poll to gently and effectively encourage the horse to come off applied pressure more willingly. Roping reins are not included. Horse size.