The Checkmate Dog Collar from EzyDog Australia is a Martingale style, limited slip collar that doesn’t require the act of re-sizing for each fitting. Dog training has never been easier with this reflective, comfortable and fully adjustable dog collar with stainless steel leash attachment point. A limited slip collar is a humane training method that is both comfortable on the dog and easy to use for owner. So with all the time you just saved, you can spend it correcting your pups unwanted behaviour.