The CSO gel Curb Chain Guard is an excellent accessory for horses that require protection from the curb chain. a quick and effective preventive measure for protection from curb chain damage. Discrete and innovative solution for any bridle, allows for desired pressure without discomfort. Encourages acceptance and submission to the curb chain. Pressure is spread evenly by the shock absorbing gel. Ideal for sensitive horses prone to soreness on the jaw. Closely fits the chain and moulds to jaw line without sticking out. will not mark or rub.