Martingale Dog Collar with Stainless Steel Chain, No Pull Slip Cinch Choker Choke Collar Training Escape Proof Heavy Duty Dog Collar for Medium Large Extra Large Pet Boy Male Dogs, Blue L

choker collar for dogs Size : Medium Size -(15" - 20" Neck) ,Large Size(19" - 24" Neck)， X-Large Size(22" - 28" Neck)， You can use a soft measuring tape and measure around dog's neck and leave space for 2 FINGERS to slip between the tape and neck. The perfect martingale collar for dogs in Training or everyday Life. We have different sizes and colors for all dogs.

MAOWUWUJOZ The main difference between a martingale collar and a regular collar is that it tightens up as a dog pulls. The purpose of this is not to choke a dog, but to prevent a dog from escape the collar. Many dogs have heads that are the same size or smaller than its 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 come up over a dog's head.