A martingale is a collar with two loops. The main loop sits around the neck, and a smaller second loop holds the D ring. When there is tension on the lead, the second loop draws the main loop in, but only to a set limit, so the collar is much harder for your dog to back out of. When the tension eases, it loosens back to comfortable. Fit it so it never closes tighter than snug. It's a design used widely by trainers and groomers.

Fit matters. A correctly fitted martingale tightens only to a set limit, so set it so it never closes tighter than snug. When the loop is pulled fully closed, the small loop should still have a gap and the collar should sit snug, never digging in. Any collar puts pressure on the neck when a dog pulls hard, so for strong pullers we recommend our no pull harness instead.

Most trainers recommend martingales as walking collars rather than 24/7 wear. The loop design needs the lead's tension to work properly, and around the house your dog is best in a flat collar. For all day everyday wear, our basic nylon collar or padded neoprene collar work better.

Yes, this is exactly the kind of collar sighthounds need. Their narrow heads and wider necks mean regular flat collars often slip off. The martingale loop holds securely on slim necks. Greyhounds typically take M or L depending on neck size, Whippets typically S or M.

The buckle clicks shut and stays locked. To release, you press the small button in the centre. This stops the buckle popping open accidentally during a walk, which can happen with cheaper plastic side release buckles when there's pressure on the collar.

Hand wash in cool water with mild soap, rinse well, and air dry flat. Don't machine wash. The metal hardware and reflective stitching will wear faster than necessary in a washing machine.