Martingale Dog Collar, Adjustable Nylon Reflective Collar with Buckle. No Pull-for Small, Medium, Large Dogs. Prevents Slipping Out-Helps with Strong pullers-Increase Control (Purple S)

WHAT IS A MARTINGALE COLLAR? The main difference between a martingale collar and a regular collar is that it tightens up as dogs pull.

The purpose of this is NOT TO CHOKE a DOG, but to prevent a dog from escaping the collar.

Many dogs have heads that are THE SAME SIZE or SMALLER THAN THEIR NECK.

With a regular collar, when a dog backs up from up, it may be able to slip a regular collar.

With a martingale collar, when this happens, the collar tightens and prevents it from coming over a dog's head.