American Made Resco Cordo-Hyde Martingale Leads combine our Resco Show Lead and a Resco Choke Collar for better control in the show ring and training exercises. Cordo-hyde is a unique wax-coated cotton material that can be balled up in the hand to hide the lead and it's stiff enough so that the dog will respond to a handler's tug on the lead in the show ring.
 
HOW TO SIZE YOUR MARTINGALE
Measure the widest part of the head - over/around the ears and under the jaw. The martingale must be able to open large enough to comfortably pass over this measurement.
Measure the neck directly behind the ears - where the show lead will actually sit.
Choose a choke approximately 2" smaller than the neck measurement. That gives the martingale room to tighten when tension is applied instead of already being fully closed at the dog’s normal neck size.
Then verify that the lead’s fully opened size is larger than the dog’s head measurement so it can actually be slipped on and off.