Don Sullivan"s International famous "Secrets to Training the Perfect Dog" system. Specific training for digging, biting, barking, jumping, housebreaking, timid/fearful dogs, aggressive dogs and many more dog related problems.Includes: 2 Training DVDs, Adjustable Command Collar, Freedom Training Line and a Quick Start Guide.Large size for large breeds - neck size up to 24 inches*Order is shipped via FedEx SmartPost which works in conjunction with the U.S. Postal Service. Final delivery is made by a postal carrier. Please check with your local post office if your postal carrier was unable to deliver your package to your address; your item might be held for only 2-3 days before the USPS returns it to our warehouse.