The Blocker Halter gives you more control when needed and is forgiving enough to be used on any horse. With a pop of the lead rop, the nylon-encased cable nose and crown will apply concentrated pressure to the poll and nose. When the horse gives to the pressur, the release is immediate. Use as an everyday halter and for training - its simply a clearer way to communicate. Legal Disclaimer - This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.